Compared with the rolling coupling, the roller coupling has such deficiency as easy to be worn, a low transmission efficiency and difficult to be maintained.
与滚动联轴器相比，滚珠联轴器的传动效率低，容易磨损破坏，维修相对困难。
So far it's not difficult to see that a positive attitude should be maintained here.
迄今为止，不难看到，应该保持一个积极的态度。
However, it is found that it is difficult to get the dimensions machined be maintained.
特别是在微孔加工和不导电的超硬材料加工方面更显示出其优越性。
However, it is found that it is difficult to get the dimensions machined be maintained.
特别是在微孔加工和不导电的超硬材料加工方面更显示出其优越性。
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