当人们把旧机油倒在地上或扔到垃圾里，它会污染环境。
When people pour old motor oil on the ground or throw it in the garbage, it pollutes the environment.
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.
本发明用废机油、废柴油和废油漆制成溃散剂，解决了铸件生产污染环境问题。
The invention employs waste machine oil, waste diesel and waste paint to produce collapsibility agent, which solves environmental pollution in cast production.
活塞泵还可将多余的机油抽回，因此可防止布料受到污染。
The piston pump can draw back excessive oil to prevent stains on materials.
还对机油快速分析方法与无污染再生机油作了简要叙述，对非铁路系统同样具有参考价值。
It also describes refreshed engine oil without pollution and its rapid analysis. The contents are valuable to the departments other than railways.
还对机油快速分析方法与无污染再生机油作了简要叙述，对非铁路系统同样具有参考价值。
It also describes refreshed engine oil without pollution and its rapid analysis. The contents are valuable to the departments other than railways.
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