The results show that the lean quasi-homogeneous mixtures can be formed by early-injection, and the shape of combustion chamber has an obvious effect on density and temperature fields of mixture.

模拟计算表明，利用早喷可以形成稀薄准均质混合气；燃烧室形状影响混合气浓度场和温度场。

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Quasi homogeneous charge compression ignition (QHCCI) combustion may be with low emissions, especially for soot and NO_X, according as the most fuel which is pre-mixed is lean burnt.

准均质充量压缩点火燃烧(QHCCI)方式占总燃料多数的预混合燃料以稀薄燃烧完成，故可能有很低的排放，尤其是碳烟和氮氧化物。

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Under the condition of quasi-equal level condition, density distribution of homogeneous layers are conflict with the real Earth density distribution.

在参数椭球的“准等位条件”下，匀质分层的密度分布并不符合地球的实际密度分布。

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