利用效率低的原因是采用了中国一些传统的灌溉方式。

The low utilization efficiency has resulted from the adoption of some traditional Chinese irrigation methods.

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因此，他将应用范围有限且效率低的蒸汽泵改造成了应用范围广泛的蒸汽发动机。

He thereby transformed an inefficient pump of limited use into a steam engine of a thousand uses.

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开发人员将所生成的代码视为效率低的。

Developers view generated code as inefficient.

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So in other words, this engine is running less efficiently than my Carnot engine.

也就是说，这个热机的效率,比卡诺热机低。

麻省理工公开课 - 热力学与动力学课程节选

If I were starting a new company, I would look for some large, fast-growing industry that was inefficient, and was not keeping pace with the changes that are possible.

要是开一家新公司的话，我会找一些大的，发展迅速但是效率较低的，没有跟上,变化的行业。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选