压缩期compressionpiston-ring: 活塞压环compressionoperatedfuelinjectionsystem: 压缩空气燃油喷射系统compressionpowerinjectionfuelpump: 气动燃油喷射泵compressionoftheearth: 地球扁率compressionpressure: 压缩压力下载手机词典可随时随地查词查翻译