We had better buy a fire resistance rolling shutter door.

我们最好买个防火卷帘门。

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It says this will extend the tyre's lifetime without affecting its rolling resistance or sacrificing its grip.

据称，其可以在不影响滚动阻力和牺牲抓地力的情况下延长轮胎的使用寿命。

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Tyre designers have therefore sought to improve fuel economy by reducing rolling resistance.

轮胎设计者因此力求减少滚动阻力以提高能源利用的经济性。

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Installing low-rolling resistance tires that are otherwise costlier and noisier than standard rubber is another easy fix, with re-sculpting front fascia designs to improve higher-speed aerodynamics also a short-run possibility.

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Bridgestone says that Ecopia tires (as seen on the Nissan Leaf) improve rolling resistance 36 percent, which means a 4 percent fuel economy improvement (5 percent for Dueler truck tires).

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They are more aerodynamic and have low-rolling-resistance tires to boost fuel efficiency.

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