The potassium dichromate and NL antirust oil which were used to prevent the cylinder and coolingsystem of diesel locomotive from corrosion are not good enough and have toxicity.
原用重铬酸钾、NL防锈油防止内燃机车的缸套、冷却系统的腐蚀，但毒性大，效果不佳。
2
Structure performance: biological solid fermenter is composed by driving system, outer jacket, inner cylinder, heating, sterilization, coolingsystem and spraying device, etc.
结构性能： 生物固体发酵罐由传动系统、外夹套、内筒体、加热、灭菌、冷却系统、喷淋装置等几部分组成。
3
A dynamic mathematic model has been established by analyzing the heat transfer mechanism in the cylinder liner water coolingsystem of main Marine engine using the transfer theory.