channel protection水道: water channel; channel; wate ...保护: protect; defend; guard; safe ...磁道保护: track protection管道保护: pipe protection管道保护层: pipe covering; piping jacket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:水道保护，即可在微信中查询翻译
