设计了一种新型试验装置，用于R 4102dl柴油机起动敲缸的试验研究。

A new kind of experiment equipment is designed for the starting knock of R4102DL diesel engine.

youdao

设计了一种新型试验装置，用于R 4102dl柴油机起动敲缸的试验研究。

A new kind of experiment equipment is designed for the starting knock of R4102DL diesel engine.

youdao