city road inspection shaft 城市道路窨井
Shaft inspection 检查井
non destructive inspection spline shaft 弹簧套爪夹头
inspection of shaft bracket installation [机] 轴支架安装检验
A city inspector drops down a shaft into a quarry for an inspection. Tunnels occasionally collapse.
一名城市巡视员通过一个抓杆到地下的采石场检查。隧道偶尔也会发生塌陷。
Inspection of the pump shaft seal ring, such as wear parts should be replaced.
检查水泵轴的油封环，如磨损严重应更换新件。
Alignment inspection installation of shaft generator and gear box.
轴带发电机及齿轮箱安装检查。
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