汽缸膨胀记录器 shell expansion: 船壳板展开; 外板展开expansion shell bolt: 涨壳式顶板锚杆; 胀壳式锚杆expansion shell type heater: 膨胀壳式加热器expansion-shell bolt: 胀壳式锚杆; 胀杀式锚杆shell expansion indicator: 汽缸膨胀指示器下载手机词典可随时随地查词查翻译