Considerable research effort had been used to come up with a range of solutions to the problems of leakage, bearing selection, material compatibility, coupling selection and user acceptance.
磁力驱动技术用于输送工艺的尝试远非那么顺利，在泄漏问题、轴承选择、材料的适用性、联轴器选择及用户认可等方面都开展了大量的研究工作。
The selection of such significant assets may also have a bearing on the approach taken to developing the system under consideration.
如此重大资产的选择也可能对开发系统所采取的方法有重大影响。
The selection of the correct cutting speed has an important bearing on the economics of all metal cutting operations.
选择正确的切削速度对所有金属的切削操作有着重要的经济上的影响。
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