常見例句The present state of non asbestic friction material production in China and requirement in early years of 21st century are presented. 分析了我國非石棉摩擦材料生産的現(xiàn)狀及21世紀(jì)初的需求量;Keywords automobile;non asbestic friction material;present state; 汽車;非石棉摩擦材料;現(xiàn)狀;asbestic half round tile 半圓形石棉瓦asbestic tile 石棉瓦,石棉水泥板asbesto identifying 石棉 返回 asbestic