lead riser的用法和样例：
例句
- By reasonable useof kiss riser,highg quality of these castings and higher casting yield can be obtained.
合理使用压边浇冒口，有效地提高了有色合金铸件的质量和工艺出品率。 - Important considerations are the rate at which a mold cavity is filled ,gate placement ,riser design ,the use of chill blocks, and padding.
着重集中在型腔如何灌注，进模口的布置，冒口的设计，冷硬试件的使用，垫模这些方面。
