The Control Valve Handbook has been a primary reference since its first printing in 1965.
此控制阀手册从1965年第一次印刷起，就已经是一个主要的参考资料。
There are many books of reference, such as dictionary and handbook.
有许多参考书，如字典和手册。
Please read your Handbook carefully and keep it for future reference.
请仔细阅读您手册上的内容并小心保留以作为以后工作的指引。
Please read your Handbook carefully and keep it for future reference.
请仔细阅读您手册上的内容并小心保留以作为以后工作的指引。
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