英语词汇“protection ring system”的翻译、意思、用法、释义-英汉双解词典-注文网

单词	protection ring system
释义	protection ring system 保护环系统
随便看	density functional method density functional theory density function ordinates density functions density gage density gauge density ga(u)ge density-governing factor density-governing reaction density gradient density gradient centrifugation density-gradient centrifugation density-gradient column density gradient column density gradient electrophoresis density gradient rate-zonal centrifugation density gradients density-gradient sedimentation density-gradient tube density gradient tube density gradient zonal centrifugation density grading density hydrometer densityi density imbalance 黄狗吃了米，逮住黑狗剁尾黄狗吃肉，白狗当罪黄狗坐轿，不受抬举黄狗插角，装羊黄狗撒尿，有数的几点儿黄狸黑狸，得鼠者雄。黄狼䟿在鸡棚上黄狼䟿鸡棚上黄瓜做扁担，转肩咬一口黄瓜刨不过来刨瓠子析产析像析出析居析爨析疑枑枓枓拱枕