最近发现了一个据估计有近500,000年历史的沉积物，该沉积物由木炭、燃烧的动物骨头和烧焦的岩石组成。
A site containing a deposit, estimated to be nearly 500,000 years old, consisting of charcoal, burned animal bones, and charred rocks, has recently been found.
在比较高的温度下，自动变速器油燃烧，导致它失去润滑性能并氧化，致使在整个变速器里留下沉积物。
At higher temperature the transmission fluid burns loosing its lubricating qualities and becomes oxidized leaving deposits all over inside the transmission.
燃烧室积碳提高了排气污染。机油必须被注入以减少这类沉积。
Combustion chamber deposits increase exhaust emissions. Oils must be formulated to reduce such deposits.
在火焰加速管中，对不同障碍物情况下的纯瓦斯、有沉积煤尘的瓦斯燃烧过程进行了实验研究。
The combustion process of gas with coal dust or gas with different obstacles in fire-accelerating pipelines has been experimentally studied.
约10％-30％的燃烧产物会以颗粒物状态随尾气排放到大气中，而其余大部分则沉积到发动机、排气系统及催化转化器的表面。
Only about 10%-30% products will be emitted as PM into atmosphere through tailpipe, but most parts will deposit on surface of engine, exhaust system and catalytic converter.
为了达到维持热核燃烧所需的高密度压缩状态，激光驱动聚变对光束能量沉积的均匀性提出了很高的要求。
Laser driven fusion requires a high degree of uniformity in laser energy deposition in order to achieve the high density compression required for sustaining a thermonuclear burn.
此外，由于玛蒂M的存在，更使燃烧残余物和积碳不会沉积在发动机中。
In addition combustion residue as well as carbon will not besettling in the engine thanks to AMTHY-M.
第三代汽油清净剂在保持发动机喷嘴、进气阀清洁的同时，增加了燃烧室沉积物(CCD)，这将增加部分污染物的排放。
Although third generation gasoline detergent additives keep nozzles and intake valves of engines clean, they simultaneously increase combustion chamber deposits (CCD).
为了查明分开式燃烧室柴油机燃烧时碳粒在燃烧室壁面上的沉积速率，提出了一种测量方法。
In order to find out how fast the diesel combustion particles deposit on the combustion chamber wall, a measuring method was developed.
这些沉积物很容易发生自燃，称为空气预热器的二次燃烧，需要对空气预热器进行热点检测来加以预防。
These sediments are prone to spontaneous combustion, which is known as the secondary combustion air preheater. The need for air preheater's hot spot detection to prevent them is necessary.
这些沉积物很容易发生自燃，称为空气预热器的二次燃烧，需要对空气预热器进行热点检测来加以预防。
These sediments are prone to spontaneous combustion, which is known as the secondary combustion air preheater. The need for air preheater's hot spot detection to prevent them is necessary.
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