In addition its combustion time is shorter than the machine-made coal.

此外其燃烧时间比机制炭短。

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This product is featured in greenness, safety, convenience and long combustion time.

本品具有绿色环保、安全便利、和燃烧时间长等优质特点。

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The paper introduces a new method of measuring combustion time with CAT technique for solid rocket engine.

介绍一种应用CAT技术确定固体火箭发动机燃烧时间的新方法。

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Electric cars are not going to replace internal combustion cars any time soon.

FORBES: Tesla's Gotcha Blog Catches New York Times Reporter Driving In Circles

In the 1980s, they like to point out, Mr Gore focused on global warming: he even predicted, amid much derision at the time, the demise of the internal combustion engine.

ECONOMIST: 2001: A Gore Odyssey

While some could argue that pure electric cars are still not ready for prime time, the Volt exists as the bridge between internal combustion and battery-powered propulsion.

FORBES: Living With A Chevrolet Volt