English — Forum #723 (Page 559/642)

1. Why must the enclosure of explosion-proof motors be grounded, and why are some that are not grounded not required to have corrective actions taken? - HCBBS Forum
2. Briefly describe the function of the filter bank override valve? - HCBBS Forum
3. Chemical Engineering in Daily Life – Question 12: Why is the breath exhaled from the mouth hot, while the breath blown out cold? Standard answer already available - HCBBS Forum
4. How to use ASPEN to verify manufacturer data - HCBBS Forum
5. What are the safety accessories for piston compressors? - HCBBS Forum
6. Mobile wastewater treatment facility - HCBBS Forum
7. What is the significance of the tower’s diameter change? - HCBBS Forum
8. Has anyone designed a tank with column supports at the cone top? - HCBBS Forum
9. A few things people in the mortal world should understand - HCBBS Forum
10. State Council Decree No. 84 on Tank Farm Management - HCBBS Forum
11. The issue of selecting the feed location for the solvent regeneration tower - HCBBS Forum
12. Condenser design - HCBBS Forum
13. How much does it cost to use the HTRI software from enrollment to actual use? - HCBBS Forum
14. The busyness of work is a way of life - HCBBS Forum
15. Question: Oxygen leakage protection catalyst - HCBBS Forum
16. The importance of survey and design may represent a turning point - HCBBS Forum
17. Daily Question: Environmental Knowledge (August 12) (2 points for answering, +4 points for a correct answer) - HCBBS Forum
18. 【20150816】How to understand the correspondence between high-voltage metering cabinets and low-voltage cabinets - HCBBS Forum
19. Food topic 25: Should boiled eggs be cooked in cold water or warm water? - HCBBS Forum
20. What is the principle behind the color change of acid-base indicators? - HCBBS Forum
21. 【Daily Question】Question from Issue 20150816 - HCBBS Forum
22. I want to change jobs; I’m not sure about the prospects - HCBBS Forum
23. Here is a question related to boilers; those in the top 30 will receive a certain score - HCBBS Forum
24. 【Basic Knowledge of Glossary Definitions for “Polymers and Materials”-027】Glossary definitions related to polymers - HCBBS Forum
25. Pressure gauge selection - HCBBS Forum
26. Question 65, Morning Session of Professional Knowledge, 2012 - HCBBS Forum
27. The sulfur ammonium crystal pump cannot achieve proper flow rate - HCBBS Forum
28. Treatment of gas drainage wastewater - HCBBS Forum
29. What is CTO process? Are there any studies in China? - HCBBS Forum
30. What are the Thunder’s chances in their opener against the Spurs? - HCBBS Forum
31. Operating temperature requirements for Siemens reducers - HCBBS Forum
32. Air-tightness testing issues for pressure pipelines - HCBBS Forum
33. Can the valve be exempted from the hydrostatic test? - HCBBS Forum
34. Research on the Socialist Core Value System and Trade Union Issues - HCBBS Forum
35. Class A boiler qualification and Class A waste heat boiler qualification - HCBBS Forum
36. There’s a fault in the distillation tower and the cause cannot be identified; I hope experts can offer some guidance - HCBBS Forum
37. Jiangsu Yuxiang is in urgent need of R&D technical personnel - HCBBS Forum
38. Reynolds number for turbulence in liquids and gases - HCBBS Forum
39. Do you know how to escape from a fire? - HCBBS Forum
40. Where can I find 2-3mm copper tubes? - HCBBS Forum
41. Questions about principles of chemical engineering - HCBBS Forum
42. Accident Handling 16: What technical measures can be taken to prevent wear on the water-cooled tube walls of circulating fluidized bed boilers? - HCBBS Forum
43. 【Haichuan Anhuan Cup】--0011+Safety Technical Regulations for Boiler Operators+*anpangpang - HCBBS Forum
44. Analytical methods for dimethoxyethane - HCBBS Forum
45. 【Daily Question】August 15: The hydrocarbon with the highest octane rating - HCBBS Forum
46. Causes and analysis of the explosion in the hazardous materials warehouse in Binhai, Tianjin - HCBBS Forum
47. Centrifugal compressor - HCBBS Forum
48. The combustion problem of a mixture of methane and nitrogen as fuel gas. - HCBBS Forum
49. Is the self-priming height of a self-priming pump the same as its NPSH? - HCBBS Forum
50. Turbine speed control system - HCBBS Forum
51. Having worked in a large design institute for 5 years, I am looking for a job in instrument design in Shanghai - HCBBS Forum
52. Uniform regulations for the process engineering field - HCBBS Forum
53. 【Daily Question】August 13, 2015 - HCBBS Forum
54. 【Daily Question】August 18: Among the following options, which one represents an incorrect scanning principle? - HCBBS Forum
55. Sealing issues of pumps – the relationship between sealing types and the medium being transported - HCBBS Forum
56. Issues with the safety valve and burst disc venting in silicon powder tanks - HCBBS Forum
57. Naphtha cracking - HCBBS Forum
58. How to show that the USB security key is not installed correctly after PVDesktop is installed? - HCBBS Forum
59. Plus to dynamic simulation - HCBBS Forum
60. What are the carbon steel pipes available for use in designs with a temperature of -15°C? - HCBBS Forum
61. What is the difference between low-stress metal wound gaskets and regular metal wound gaskets? - HCBBS Forum
62. In turbine-type equipment, what are the concepts of single cantilever and central suspension, and how can they be distinguished? How many suspensions can a single piece of equipment have at most... - HCBBS Forum
63. Electric valve for circulating water - HCBBS Forum
64. The acid consumption issue in alkylation - HCBBS Forum
65. What kind of valves are generally used for the boundary valves in circulating water pipelines? ? ? - HCBBS Forum
66. I don’t know why I can’t delete the post - HCBBS Forum
67. Deep reflection on valve lot numbers - HCBBS Forum
68. Problems with rope fixation in cable-type steel chimneys - HCBBS Forum
69. A weight of over 2,500 tons - HCBBS Forum
70. What material is used for containers that store liquid ferrous sulfate - HCBBS Forum
71. Argon tungsten welding of U-shaped elbows - HCBBS Forum
72. The zirconia oxygen content analyzer cannot measure the burnt gas - HCBBS Forum
73. Air Liquide (Fuzhou) - HCBBS Forum
74. 【Daily Question】What is the outlet for heavy diesel oil from the catalytic cracking fractionator on August 14th? - HCBBS Forum
75. Definition of valve foundation - HCBBS Forum
76. Is it feasible to use ammonia water to absorb the exhaust gas resulting from the nitric acid oxidation of glyoxal? - HCBBS Forum
77. Weekly Topic: Discussion on Issues in the Coking Process - HCBBS Forum
78. Why are both mass and amount of substance the two most independent physical quantities? - HCBBS Forum
79. hysys dynamic simulation tank - HCBBS Forum
80. Naphtha cracking - HCBBS Forum
81. Regarding the lean liquid activated carbon filter - HCBBS Forum
82. Chemical Engineering in Daily Life – Question 18: What oil should you eat? Standard answer already available - HCBBS Forum
83. What is the meaning of accuracy and precision? How to express it? - HCBBS Forum
84. 【Daily Question】Wastewater Knowledge (August 10) (2 points for an answer, 4 points for a correct answer) - HCBBS Forum
85. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 136 - HCBBS Forum
86. Why are you taking the registration exam? - HCBBS Forum
87. Q235bc can’t be used in pressure vessels these days, right? - HCBBS Forum
88. 【Daily Question】Question from Issue 20150815 - HCBBS Forum
89. Is a construction license required to install eyewash stations on-site? - HCBBS Forum
90. What are the uses of 75% sulfuric acid? - HCBBS Forum
91. I have a small issue with the shielded pump; could any technician help resolve it? - HCBBS Forum
92. 【Daily Question】Question from Issue 20150810 - HCBBS Forum
93. Chemical Engineering in Daily Life - Question 11 - Standard Answers Available - HCBBS Forum
94. How significant is the role of safety awareness campaigns? - HCBBS Forum
95. The impact of excessively high dehydrogenation temperatures on welds - HCBBS Forum
96. How to set both seismic and uniformly distributed loads in CaesarII? - HCBBS Forum
97. Air Quality Index and Air Pollution Index - HCBBS Forum
98. What are the application principles of rotary pump? Qingdao Rhode Rotary Pump - HCBBS Forum
99. After installing two versions of CAD, double-click the file to launch the default program - HCBBS Forum
100. What material is more suitable for the gasket used in the plate heat exchangers in the recycling workshop of coking plants? - HCBBS Forum