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  1. Calculation of the oxygen volume in a fixed space under negative pressure - HCBBS Forum
  2. Daily Question on Automation Theory Knowledge (9.14) - HCBBS Forum
  3. Is Toc affected by temperature? - HCBBS Forum
  4. 【Daily Question】Theoretical Foundation 2019.5.2 - HCBBS Forum
  5. One Question per Day in Applied Chemistry 8-10 - HCBBS Forum
  6. Ammonia reacts with carbon dioxide to form a salt - HCBBS Forum
  7. One Question per Day in Applied Chemistry 8-8~8-9 - HCBBS Forum
  8. 【Daily Question】Theoretical Foundation 2019.7.15 - HCBBS Forum
  9. Daily Question on Automation Theory Knowledge (9.10) - HCBBS Forum
  10. 【Daily Question】Theoretical Foundation 2019.6.23 - HCBBS Forum
  11. The difference between water/H2O/steam in PROII - HCBBS Forum
  12. 【Daily Question】Theoretical Foundation 2019.12.20 - HCBBS Forum
  13. Daily Question on Automation Theory Knowledge (9.4) - HCBBS Forum
  14. Seeking help with theoretical calculations of gas jets - HCBBS Forum
  15. Formaldehyde - HCBBS Forum
  16. 【Daily Question】Theoretical Foundation 2019.10.26 - HCBBS Forum
  17. Conversion of water vapor flow rate - HCBBS Forum
  18. Floating-head graphite heat exchanger - HCBBS Forum
  19. 【Daily Question】Theoretical Foundation 2019.6.13 - HCBBS Forum
  20. Heat transfer coefficient K - HCBBS Forum
  21. 【Daily Question】Theoretical Foundation 2019.12.4 - HCBBS Forum
  22. On the treatment of epichlorohydrin exhaust gases - HCBBS Forum
  23. What do these analytical methods mean? - HCBBS Forum
  24. , - HCBBS Forum
  25. 【Daily Question】Theoretical Foundation 2019.7.14 - HCBBS Forum
  26. Methanol synthesis - HCBBS Forum
  27. Water hammer pressure variation - HCBBS Forum
  28. Hydrogen explodes - HCBBS Forum
  29. How to convert mg/ml to mg/mg, with a specific gravity of 1.25 - HCBBS Forum
  30. Two-phase flow pattern - HCBBS Forum
  31. 【Daily Question】Theoretical Foundation 2019.5.27 - HCBBS Forum
  32. Boiler - HCBBS Forum
  33. [Daily Question] Theoretical Basis 2020.01.16 - HCBBS Forum
  34. Where can I learn *a relatively comprehensive overview of chemical engineering principles? Payment is also possible - HCBBS Forum
  35. 【Daily Question】Theoretical Foundation 2019.12.22 - HCBBS Forum
  36. Does water hammer occur when two liquids meet? - HCBBS Forum
  37. 【Daily Question】Theoretical Foundation 2019.2.18 - HCBBS Forum
  38. 【Daily Question】Theoretical Foundation 2019.7.11 - HCBBS Forum
  39. 【Daily Question】Theoretical Foundation 2020.03.26 - HCBBS Forum
  40. Help convert it - HCBBS Forum
  41. Relationship between gas flow rate and pressure - HCBBS Forum
  42. How should the settling time of oil in a storage tank after it has been filled be calculated? What are the relevant regulations or standards? - HCBBS Forum
  43. pipeline - HCBBS Forum
  44. Thermodynamics - HCBBS Forum
  45. 【Daily Question】Theoretical Foundation 2019.10.11 - HCBBS Forum
  46. Static pressure of pipeline - HCBBS Forum
  47. High-temperature thermal insulation coating for pipeline kiln body can effectively maintain heat and save energy - HCBBS Forum
  48. How can water, methanol, and propanone be separated from each other? - HCBBS Forum
  49. 【Daily Question】Theoretical Foundation 2019.11.2 - HCBBS Forum
  50. Help! What form of dynamics is this? - HCBBS Forum
  51. Do you know what common chemical raw materials there are? And do you also know how to deal with poisoning from chemical reagents? - HCBBS Forum
  52. Propane washing - HCBBS Forum
  53. Is heat absorbed during evaporation, or does evaporation occur only when heat is absorbed, or do both happen at the same time? - HCBBS Forum
  54. Gas flow temperature and pressure compensation - HCBBS Forum
  55. 【Daily Question】Theoretical Foundation 2019.2.19 - HCBBS Forum
  56. Selection of MVR centrifugal compressors - HCBBS Forum
  57. 【Daily Question】Theoretical Foundation 2019.9.24 - HCBBS Forum
  58. 【Daily Question】Theoretical Foundation 2019.6.22 - HCBBS Forum
  59. Regarding the differences between bromination and chlorination reactions - HCBBS Forum
  60. The issue of alkali solution absorption - HCBBS Forum
  61. Dalton’s law of partial pressures and Raoult’s law - HCBBS Forum
  62. 【Daily Question】Theoretical Foundation 2019.1.24 - HCBBS Forum
  63. 【Daily Question】Theoretical Foundation 2019.6.9 - HCBBS Forum
  64. 【Daily Question】Theoretical Foundation 2019.3.9 - HCBBS Forum
  65. [Daily Question] Theoretical Basis 2020.04.05 - HCBBS Forum
  66. I have a question for the experts·········· - HCBBS Forum
  67. 【Daily Question】Theoretical Foundation 2019.4.15 - HCBBS Forum
  68. Does everyone know how to calculate the exhaust volume of the vacuum pump in a distillation system or a reaction system? - HCBBS Forum
  69. Qingdao Gulf Chemical Engineering Design Institute is recruiting design staff and construction management personnel - HCBBS Forum
  70. 【Daily Question】Theoretical Foundation 2019.4.23 - HCBBS Forum
  71. Gas flow around a body - HCBBS Forum
  72. Practical Guide to Chemical Process Design---How is a P&ID Created? (2) - HCBBS Forum
  73. Seeking advice on calculating temperature after air pressure reduction - HCBBS Forum
  74. Pipeline flow rate - HCBBS Forum
  75. 【Daily Question】Theoretical Foundation 2020.02.08 - HCBBS Forum
  76. Total heat transfer coefficient K of the heat exchanger - HCBBS Forum
  77. 【Daily Question】Theoretical Foundation 2020.04.01 - HCBBS Forum
  78. 【Daily Question】Theoretical Foundation 2019.4.8 - HCBBS Forum
  79. Daily Question on Automation Theory Knowledge (7.18) - HCBBS Forum
  80. Maximum allowable instantaneous temperature change range for round-bottom flasks - HCBBS Forum
  81. 【Daily Question】Theoretical Foundation 2019.5.24 - HCBBS Forum
  82. Water quality analysis - HCBBS Forum
  83. One Question per Day in Applied Chemistry 8-21 - HCBBS Forum
  84. One Question per Day in Applied Chemistry (9-7) - HCBBS Forum
  85. Multiple wires and gland heads - HCBBS Forum
  86. What is the constant-pressure molar heat capacity of ions in aqueous solutions, and why is it negative for some of them? - HCBBS Forum
  87. [Daily Question] Theoretical Basis 2020.02.29 - HCBBS Forum
  88. Dear experts, how many tons is 240 cubic meters of isopentane? - HCBBS Forum
  89. Valve failure in the instrument air piping network - HCBBS Forum
  90. Daily Question on Automation Theory Knowledge (8.17) - HCBBS Forum
  91. Calculation of three-component gas distillation - HCBBS Forum
  92. 【Daily Question】Theoretical Foundation 2020.03.28 - HCBBS Forum
  93. 【Daily Question】Theoretical Foundation 2019.7.29 - HCBBS Forum
  94. The natural gas consumption is 120 cubic meters per hour; the pipes are DN40, and the boiler cannot burn when the pressure is 0.06 MPa before pressure regulation - HCBBS Forum
  95. Daily Question on Automation Theory Knowledge (8.27) - HCBBS Forum
  96. 【Daily Question】Theoretical Foundation 2020.02.22 - HCBBS Forum
  97. Where can I find the compressibility factor of a gas, and how do I calculate it? - HCBBS Forum
  98. The filter element of the security filter is clogged - HCBBS Forum
  99. Questions about dew point temperature - HCBBS Forum
  100. 【Daily Question】Theoretical Foundation 2019.11.25 - HCBBS Forum
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