压汽封漏汽 high pressure seal packing: 高压轴封迫紧high pressure steam packing: 高压蒸汽填料packing leakage: 密封漏泄; 汽封漏汽packing-leakage: 密封漏气external packing leakage: 端部汽封漏泄; 端汽封漏泄下载手机词典可随时随地查词查翻译