He bought a thin metal plate with a hole at the centre.
他买了块中心有孔的薄金属板。
These experiments include tension experiment of a plate with a hole, vibration and turn experiment.
这些实验包括带孔板件的拉伸实验、板件的振动实验、板件的转动实验。
Stress of composite material plate with circular hole was analyzed by the model above.
按照所建立的计算模型对含有圆形孔的复合材料板进行应力分析。
Small hole can be used with thin ropes if necessary, or as a belay plate.
细孔与幼绳同用或可作保护板用。
As the improvement, the material loading plate is provided with a through hole.
作为改进，在载料板上开有通孔。
As the improvement, the material loading plate is provided with a through hole.
作为改进，在载料板上开有通孔。
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