Regular tubing variety and tubing diameter series in the project location;

工程所在地的常规管材品种及管径系列；

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Aerospace - airframe ball bearings, double - row, self - aligning, diameter series 2 - metric series.

航空航天。飞机结构用直径系列2的自位双列球轴承。米制系列。

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The combination of the width series number and the diameter series number indicates the dimensional series.

这个数字组合和直径宽系列的数字表示尺寸方案。

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With skyscrapers, the deep foundation systems overcome this issue by drilling or hammering in a series of relatively small foundation piers (3ft or 1m in diameter or so).

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