以DF 4 B型机车为例，系统地分析了造成柴油机机油压力低的原因，并提出其判断方法和对策。
Taking DF4B locomotive as an example, this paper analyses the reason of too low lubricating oil pressure in running diesel engine, and gives countermeasures for it.
本文以东风9内燃机车为例，分析了各种速度下的平稳性指数，并比较了线性模型和非线性模型的分析结果。
As an example, the riding index of diesel locomotive type DF 9 is calculated and the results of linear and nonlinear models of the locomotive are compared.
以DF7C型内燃机车锻件中的杯形零件之一——气缸螺栓保护螺母为例，进行温挤压工艺研究，并据此设计出了成形模具。
Taking cylinder nut-protected bolt, one of the cup-shaped parts in the forging parts of DF7C gas engine, as an example, the warm extruding is researched, accordingly, the forming die is designed.
以DF7C型内燃机车锻件中的杯形零件之一——气缸螺栓保护螺母为例，进行温挤压工艺研究，并据此设计出了成形模具。
Taking cylinder nut-protected bolt, one of the cup-shaped parts in the forging parts of DF7C gas engine, as an example, the warm extruding is researched, accordingly, the forming die is designed.
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