He was on pins and needles, waiting for the test results.
他正等着考试的结果，感觉如坐针毡。
With the increasing of road test mileage, because of the fretting wear picking up, the combined firm degree of pins and outer link plate bore, bushings and inner link plate bore is declined gradually.
随着道路试验里程的增加，由于微动磨损的不断加剧，其销轴与外链板孔、套筒与内链板孔的联结牢固度在逐渐降低。
The problems existing in large shear clamp for shear test of pins are analyzed in detail in this paper, and practical improvement method is given.
对现有的剪断销剪切试验用重型单剪装置存在的问题进行了系统分析，提出了对该重型单剪装置结构优化的具体方案和实施办法。
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