ball valve
ball valve
[矿业英汉词典]
ball valve球阀
是什么意思，ball valve的解释，ball valve的翻译
[新英汉石油技术词典] ball valve
[专利英汉词典] ball valve
[仪器仪表英汉词典] ball valve
[信息英汉词典] ball valve
[农牧林英汉词典] ball valve
[化学英汉词典] ball valve
[建筑英汉词典] ball valve
[机械英汉词典] ball valve
[水利英汉词典] ball valve
[汽车英汉词典] ball valve
[海运英汉词典] ball valve
[环境英汉词典] ball valve
[电信英汉词典] ball valve
[电力英汉词典] ball valve
[石油英汉词典] ball valve
[纺织英汉词典] ball valve
[能源英汉词典] ball valve
[自动化英汉词典] ball valve
[航海英汉词典] ball valve
[船舶英汉词典] ball valve
[进出口英汉词典] ball valve
[造纸英汉词典] ball valve