英语翻译这边有几个句子和短语,来自某机械说明书上1、If a certain make of flexible coup

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英语翻译
这边有几个句子和短语,来自某机械说明书上
1、If a certain make of flexible coupling has to be used,the following data of it must be informed
2、A turning gear with a capability of turning a higher external torque may be needed e.g.in installations as listed below,in which case consideration should be given to installing a separate turning gear e.g.on the reduction gear.
3、In case of two bearing type generator installations a flexible coupling between the engine and the generator is required.
4、（短语）mass-elastic diagram
5、（短语）at full/zero pitch in water
我非常急需要这些句子的翻译,急用,

缺少上下文,偶也不是学机械的,凑合着翻吧,第四个不会.
1、如果需要使用某些弹性联轴节,您得告知我们以下数据
2、可能需要一个可以转动更大外部扭矩的转向齿轮,比如,在下面列举的安装过程中,需要考虑安装一个独立的转向齿轮,如减速齿轮.
3、要安装两台轴承发电机的情况下需要在发动机和发电机使用弹性联轴节
5、在水中使用全螺距/零螺距时

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