longness 中文意思是什麼
longness
解釋
長度-
Now there are thousands and thousands kilometers of pipeline in service all over the world, and in china, till the end of 1994 the longness of main pipeline in service for the transportation of petroleum and gas had been more than twenty thousands kilometers
目前全球有長達數千萬公里的各類在役管道，而在我國，到一九九四年底油氣管道干線已長達兩萬多公里。 -
Aperture longness mm
軸孔長度mm -
Aperture longness l
軸孔長度
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