At 8.5 million copies, this is the largest first printing ever.
八百五十万本，是史上最大的初版印量。
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。
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。
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