oil viscosity rating机油: engine oil; machine oil粘度: viscosity号数: number机油粘度号数(机油号数): oil viscosity rating内燃机油粘度分类: viscosity classification of internal combustion engine oil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:机油粘度号数,即可在微信中查询翻译