study on process variables for dimethyl ether synthesis from syngas 合成氣直接合成二甲醚的工藝研究
number of orders processed variable 處理的定制數(shù)目(變量)
as the name of this process variable 作為流程變量名。
this is the desired value of a process variable which cannot be changed by the operator during execution 每次運行都需要改變的過程設(shè)定值,而且通常必須由操作員來輸入。
this is the desired value of a process variable which may change from run to run and must usually be entered by the operator 每次運行都需要改變的過程設(shè)定值,而且通常必須由操作員來輸入。