Chemical combustion engines are an unbeatable technology for escaping Earth's atmosphere and gravitational pull.

化学推进发动机毫无疑问是一种不可超越的脱离地球大气层以及地心引力的技术。

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These lasers usually employ chemical combustion to energize directly the lasing process by various one-way reactions.

这些激光器一般利用化学燃料，通过各种单向反应直接驱动激射过程。

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Slagging is a very complicated physical and chemical process which deals with several scientific courses such as combustion, multi-phase flow, heat and mass transfer etc.

结渣过程是个十分复杂的物理化学过程，其中涉及燃烧、气固多相流、传热与传质等多门学科。

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Every fuel cell, which generates electricity by a chemical reaction (as opposed to combustion), has an electrolyte.

FORBES: Salt Water Fuel Cells - Coming Soon?

Fuel cells use the chemical energy of fuel to generate electricity without combustion.

FORBES: Grid Problems Boost Fuel Cell Market