套管
asking for───请求……（asking是ask的现在分词）；索要……（asking是ask的现在分词）
calling for───要求
coming for───为某种目的而来取；向…冲来；对…进行袭击
making for───导致；有助于；走向
paying for───赔偿；为…而付钱；为…付出代价
taking for───认为；以为
asks for───请求，要求；寻找
calls for───要求；需要（callfor的第三人称单数形式）
casing shoe───n.套管鞋，[矿业]套管靴；套管底环
of thecasings forthis internet radio had hairline fractures in them (or so he claimed) so he offered to redo the batch at great discount.───这个无线收音机内部有发丝那么细的裂缝，所以他愿意打折扣重做一批。
The component factory I visited specialized in plasticcasings forspeakers, MP3 players, etc.───这家工厂主要生产扬声器和Mp3播放器的塑料外壳等产品。
We manufacturing key parts for automotive front and rear axlecasings forvarious light-duty trucks and MPVs.───汽车行业：我公司生产的汽车前后桥关键零部件，广泛应用于轻型汽车和商务车中。
Deviations of Shaft Centre Distances and Shaft Position Tolerances of Casings for Cylindrical Gears───圆柱齿轮箱的轴位公差和轴距偏差
Cylindrical metalcasings forelectrical engineering───电工技术用圆柱形金属外壳。挤压件
Cylindrical metalcasings forelectrical engineering with thread pivot───电工技术用带螺纹插头的圆柱形金属外壳.挤压件
Handling of Deformation of Steel Casings for Large Diameter Bored Piles───大直径钻孔桩钢护筒变形及处理
Construction of Steel Casings for Large Diameter Bored Piles in Deep Water for Xiangjiaomen Bridge───响礁门大桥深水大直径钻孔灌注桩的钢护筒施工
We manufacturing key parts for automotive and rear axlecasings forvarious light - duty trucks and MPVs.