Fuel economy performance and some the latest specifications of inter-combustion engine oil at home and abroad are recounted. Test method of fuel economy performance is introduced.
重点叙述了国内外内燃机油燃料经济性能及油品规格的要求，介绍了评价燃料经济性的试验方法。
The effects of physical dimension(inner diameter and length-to-diameter ratio) on the combustion performance of a tubular variable-burning-rate gun propellant were investigated by closed bomb test.
采用药柱密度测量技术和密闭爆发器试验，分析了试样的损伤程度，并对损伤装药的燃烧性能进行了研究。
The comparison test is made to the static and dynamic incipient combustion performance of the catalyst on the test bed for the catalyst performance evaluation.
在催化剂性能评价台架上对催化剂的动态、静态起燃特性进行了试验对比。
A stead flow test that predicts the performance of the novel internal combustion engine with oval bore is presented.
本次稳流试验用来预测新颖的椭圆气缸往复式内燃机的性能。
The test shows that the diesel engine performance can get some improvement when the latter combustion chamber is used.
试验表明，使用中心带凸台的缩口型燃烧室后柴油机的性能有所改善。
The test shows that the diesel engine performance can get some improvement when the latter combustion chamber is used.
试验表明，使用中心带凸台的缩口型燃烧室后柴油机的性能有所改善。
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