quadruple-expansion engine四: four胀: expand; dilate; inflate汽机: steam engine; steam turbine单胀汽机: simple expansion engine三胀汽机: triple expansion engine下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:四胀汽机，即可在微信中查询翻译
