Since it is impossible to know the consequences of allthese variables each time paint is applied, a simple field method is needed toarrive at the proper pressure.
鉴于每次喷涂时不可能知道是哪些变量所造成的结果，所以需要一个简单的现场试验来判断压力是否合适。
Since it is impossible to know the consequences of allthese variables each time paint is applied, a simple field method is needed toarrive at the proper pressure.
鉴于每次喷涂时不可能知道是哪些变量所造成的结果，所以需要一个简单的现场试验来判断压力是否合适。
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