Besides dispensing with the traditional engine bay on a car, hub motors save space and weight because there is no need for a mechanical transmission, with its driveshafts and differential units.

除了不需在汽车上配置传统发动机舱，由于轮毂电机不需要机械传动(一般有传动轴和差别单位)，轮毂电机能节省汽车空间并减少重量。

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The engine would have used loops of Jacquard's punched CARDS to control a mechanical calculator - the forerunner of today's methods of computer programming.

这种分析机本来会用成串的雅卡尔打孔卡控制一只机械计算器——今日计算机编程法的先驱。

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One of the devices most prized by gadget collectors, the Curta Calculator is a modern Difference Engine - an entirely mechanical calculating machine capable of great precision.

最受装置收藏家推崇的设备之一，CURTA计算器是一台现代差分机——一台能进行高精度计算的全机械结构计算器。

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The fire later was determined to be caused by a mechanical breakdown in the engine room of the ship Cape Trinity, a floating warehouse as long as two football fields.

NPR: Houston Drill Tests Agencies' Preparedness

At the most basic level, this relates to how carmakers are eliminating the direct mechanical connections between components and the engine.

BBC: Electric motoring: a quiet revolution

They rely on a fluid, rather than a mechanical clutch, to transmit the engine's torque to the wheels, and this is inefficient.

ECONOMIST: Fuel economy