pollution-free fuel的意思|示意

Vehicles powered by hydrogen fuel cells are, in theory, pollution-free but their popularity has been compromised by the difficulty of generating hydrogen cheaply and plentifully.

从理论上讲，氢燃料电池驱动的汽车是无污染的，但由于氢难以廉价、大量地生产，这种汽车在普及方面打了折扣。

Solar energy is lauded as an inexhaustible fuel source that is pollution and often noise free. The technology is also versatile.

太阳能被称为是取之不尽的能源，没有污染，通常也没有噪声，而且用途广泛。

Magnesia chrome bricks must be replaced by chrome free basic bricks because of chrome pollution and for utilization of substituting fuel in cement kiln.

为了消除铬公害以及替代燃料的使用，研制水泥窑用碱性砖的无铬化势在必行。

Proton membrane fuel cell (PEMFC) with its advantages such as high power density, rapid start and pollution-free becomes the first-selected clean energy system in 21st century.

质子膜燃料电池(PEMFC)以其高功率密度，启动迅速，无污染等优点成为21世纪首选清洁能源系统。

Fuel - cell technology was once used exclusively to power spacecraft, but it is now being brought down to earth, offering the prospect of pollution - free transportation.

燃料电池技术曾经只被用来为航天器提供动力，但现在被拿到地球上，给人们带来了无污染交通运输的前景。

Fuel cells have long promised pollution-free driving , but have been held back by their enormous cost when applied to a normal car .

燃料电池长期预示着无污染驾驶，但是当它被应用到一辆普通车上时，因其巨额的成本，举步维艰。