养护时首先应查看轮胎气压、磨损状况，螺母有无松动或掉落，除去双胎间或胎面上的嵌入物及铁钉等尖利杂物。
Maintenance should first check the tire pressure, wear, nut loose or fall off, remove the twins or tread on the inserts and nails and other sharp objects.
铜螺母与弹性阀门采用嵌入式接合，使二者紧密接合为一体，不因水流动造成震荡而产生松动或损坏现象。
The copper nut and resilient are connected by embedded way, two parts closely integrated into one body, hardly loose and damage by shock from water flowing.
自锁螺母- 螺母丝口内嵌入了一种弹性尼龙物，防止意外松脱。
NYLOC – nut with elastic nylon insert that prevents it from unthreading by accident.
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