["1方の煤气を水蒸气で飽和した後の総焓量キロカロリーを查询哪本书呢"
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"3. 横管冷却器の冷却面积を計算中、計算依据を引用する必要があるため、哪本书要找到、哪位大神指导一下"
"4. 以前の古い窒氮肥设计手册の中に該当する内容があるか见一下"
看看以前的小氮肥设计手册里面有没有
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