The engines are extremely well known for their durability, high fuel efficiency and good low to mid range torque.

发动机是极其众所周知，其耐用性，燃油效率高和良好的低到中期范围内扭矩。

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Among other available heat engines, the stifling engine embodies some interesting features: high efficiency, low noise and vibration as well as the ability to use the sources of high energy density.

在其他各种热动力中，热气机具有许多特点：高效率，低噪音和振动，以及可利用高能量密度的各种热源等。

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Pumping recovery well has a low efficiency in system generally at present.

抽油机井目前普遍存在系统效率偏低的问题。

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The firm is well run only by the low standards of the auction business, and there is room for further efficiency improvements.

ECONOMIST: French auctioneers