Through experiments, the possibility is studied of producing white oil by such raw materials as oil, heavy diesel oil at normal or negative pressures.

通过实验研究了机油、常压重柴油、减压重柴油和回炼油作原料生产白油的可能性。

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Because of much difference in physical and chemical characteristic compared with light diesel oil, heavy diesel fuel makes many problems in fuel combustion on those engines.

但由于重质燃料油与轻柴油在燃油理化特性等方面具有明显差别，在缸内燃烧方面仍然存在许多问题。

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The USA plans to use "on-board test method" on the heavy diesel vehicle in 2007, measure and evaluate the HDV PM emission in the real world, carry out more effective control of the emission.

美国环保局计划于2007年实施重型车车载排放测试法，对重型柴油车在实际行驶过程中的排放进行测量和评估，实现更有效的控制。

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In 2008, London created its Low Emission Zone (LEZ) to encourage the most polluting heavy diesel vehicles driving in the city to become cleaner.

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Following the summer's seasonal manufacturing shutdowns, higher light-duty diesel product sales were offset by lower sales of heavy-duty diesel filters and substrates.

ENGADGET: Corning touts 1 billion Gorilla Glass devices: that's a lot of face-saving surfaces

One thing hasn't: Cummins Engine, the world's biggest maker of heavy-duty diesel engines, still doesn't make money.

FORBES: This time is different -- maybe