medium-speed diesel engines

A sort of novel dispersant by the reaction of PIBSA with aminosalicylic acid is used for low or medium-speed diesel engines, with evident effect on solving problem of "black paint".

PIBSA与胺基水杨酸反应合成的一种新型分散剂，应用到中低速柴油机中，对解决“黑漆”现象效果明显；

This paper describes main reinforcing methods for crankshafts of medium -bored high - speed diesel engines.

本文概述了中等缸径高速柴油机曲轴的主要强化方法。

The materials have been widely used to make valve seats for most medium-and high-speed diesel engines at home and abroad.

近来随着引进国外柴油机新技术和新型柴油机，气门座材料趋于含碳量、铬量更高，甚至于采用高碳、高铬多元合金的镍基材料。