而对于一些小型发动机，气缸壁面镀铬，铬是一种硬度非常高的金属，可减少气缸壁的磨损并延长使用寿命。
However, in some small engines, the cylinder walls are plated with chromium, a very hard metal, to reduce wall wear and lengthen their life.
以某小型高速气缸白勺常规寿命试验为基础，通过对气缸白勺失效机理分析，确定其失效模型。
Based on the conventional life test of a small high-speed pneumatic cylinder, a failure model is determined through failure mechanism analysis.
本文针对小型风冷压缩机气缸换热条件较差问题，提出利用汽化潜热对气缸强化换热的方案。
In view of the poor heat transfer conditions of the cylinder ina small air compressor, a scheme is put forward for reinforcing heat trans-fer of cylinder by latent heat of vaporization.
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