这些盖由钢制成，以便具有足够的强度，并在密封表面装配有弹性部件。
These covers are constructed of steel for strength and fitted with elastomer components on the sealing surfaces.
在进行灌装口装配时，会再次检查底座及绿盖的状态是否良好。
During the assembly of the filling mouth, check the state of base and green lid once again to see if they are in good condition.
同时，装配时连杆与连杆盖紧密接触并互相锁定，可提高曲轴零件的刚度，改善发动机的性能。
At same time, impinging on and mutual lock of rod and cover when assembling them can improve rigidity of other series crankshaft parts and engine performance.
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