隐形卡环联合固位式铸造可摘局部义齿的疗效观察-- 关键词]隐形卡环;铸造卡环;可摘局部义齿;美容修复 [gap=979]Key words:cast clasp;resin clasp;removable partial denture;aesthetic restoration
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clasp cast iron drainage pipe 卡箍式排水铸铁管
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When using centrifugal cast iron pipe, we should pay attention to its installation and technical requirements, such as that of stainless steel clasp and local support and hanger of pipe.
无承口离心排水铸铁管的安装和拆卸均非常方便，但要注意不锈钢卡箍橡胶密封接口的安装方法和管道局部支吊架的特殊要求。
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