铸铁闸瓦 meaning in Chinese

cast iron brake shoe

Cast iron brake - shoes for railway locomotive
机车用铸铁闸瓦
Cast iron brake shoe
铸铁闸瓦
The test conditions and production processing of a new type composition brake shoe are introduced , and the working life is raised a times than iron brake shoe , showed by underground industry test
介绍了新型合成闸瓦的试验条件及生产工艺过程；通过井下工业性试验，合成闸瓦比铸铁闸瓦使用寿命提高一倍。