图中叶片的旋转方向是顺时针的,还是反时针的?
Do the vanes in the figure rotate clockwise or counterclockwise?
削弱的一种状况,其中叶片钢的核心速度比戴钻石段。
Undercutting is a condition in which the steel core of the blade wears faster than the diamond segments.
本文就番茄长季节栽培中叶片的生长特性进行了观测和研究。
The leaf growth characteristic of tomato long-season culture in greenhouse was observed and studied in this paper.
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