艉轴管衬套压紧验收。
艉轴管前、后轴承与衬套直径测量。
Measuring diameter of fore and aft stern tube bearing and bushes.
照明装置至少包括带内螺纹的金属衬套、印刷电路板、发光二极管、微动开关、弹簧电极、电池及金属后盖。
The lighting device comprises at least a metal sleeve with a female thread, a printed circuit board, a LED, a microswitch, a spring electrode, a battery and a rear metal cover.
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