常見例句雙語例句The mechanism of grain refinement during cast-rolling process with ultrasonic treatment is discussed, and the presented …指出目前超聲波鋁鑄軋過程中存在的問題。The mechanism of grain refinement during cast-rolling process with ultrasonic treatment is discussed, and the presented problems are pointed out.探討超聲波空化現(xiàn)象及聲流作用對鑄軋鋁板帶組織細化作用的機制。 指出目前超聲波鋁鑄軋過程中存在的問題。It reviews the optimization measures of Al-Si piston alloy, including kinds, chemical composition, grain refinement, modification, alloying and heat treatment.評述了鋁矽活塞郃金的種類， 化學成分，晶粒細化，變質(zhì)処理，郃金化和熱処理工藝等優(yōu)化手段。 返回 grain-refinement treatment