订购时，请指明阀门尺寸、规格型号，以及从阀门法兰到延长件法兰顶部的准确距离(用户指定的长度如右图所示)。

When ordering, specify valve size, figure number, and the exact distance from the valve flange to the top of extension flange (customer-specified length shown at right).

youdao

订购时，请指明阀门尺寸、规格型号，以及从阀门法兰到延长件法兰顶部的准确距离（用户指定的长度如右图所示）。

The top flange of an extension stem, plug shaft diameter, and distance across flats on plug shaft are the same size as the valve selected.

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最准确地测量一个目标的距离的方法是运用“视差”，视差是指从不同角度观察一个目标而产生的视角的差异。

The most precise way to measure an object's distance is to use "parallax" - differences in perspective created by viewing an object from different angles.

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Studies have been done in the city of New York where you can-- if you live in Manhattan you can actually get a very nice metric of how far apart people live from each other in city blocks. Right?

纽约市就做过这类实验,在纽约-,如果你生活在曼哈顿,你能准确地测量,生活不同街道的人相互距离多远？

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