And there is a race on at the moment to convert electricity from tidal and wave power, in order that we can leave the coal in the ground.
目前也有一场竞赛，要从潮汐能发电，如此我们才能停止开采煤炭。
The wave spring preloads the bearing through its outer race, taking up play in the bearing.
波簧通过轴承外座圈预压轴承，在轴承内起作用。
The wave spring preloads the bearing through its outer race, taking up play in the bearing.
波簧通过轴承外座圈预压轴承，在轴承内起作用。
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