Sorting before finishing, proper mechanical operations during finishing and good selection and match of the finishing chemicals etc. were key points in producing a high quality leather.

通过对涂饰前革坯的挑选，涂饰过程中的机械操作以及涂饰化料的选择与搭配等方面进行合理控制，成革的质量可以显著提高。

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The Institution of Mechanical Engineers (IMechE) said jobs created by fracking, a form of gas extraction, included chemical, mechanical, civil and structural engineers, operations staff and geologists.

BBC: Fracking could create 'thousands' of engineering jobs

American, which replaced its top operations executive last month, says its aging fleet has led to increased cancellations because of more mechanical breakdowns.

WSJ: The Leader in Lost Bags, Canceled Flights