shingle ballast砾石: gravel; grail; dirt压载: ballast石压载: stone ballast砂石压载: shingle ballast压载: ballast◇压载 (水)舱 ballast tank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:砾石压载,即可在微信中查询翻译