steel pipe core 钢管芯
precasting pipe core 预制管芯
steel pipe core concrete column 钢管混凝土柱
core pipe extractor 芯管提取工
paper core pipe 纸芯管
core pipe 芯管
foam-core pipe 芯层发泡管材
iron core pipe 铁芯管
Precision filter, namely core filter, can further remove the suspended solids and other impurity in the water, it is made of micro hole chinaware, micro hole non-toxin plastic and cell pipe core.
精密过滤器也称保安过滤器，能进一步去除水中悬浮颗粒及其它杂质，它采用微孔陶瓷、微孔无毒塑料、蜂房式管状滤芯。
The riser's inner hollow core (a pipe within a pipe) is reserved for the drill string.
立管内部核心是空心的(管中管)，留给钻柱使用。
The gallop's structure: core pipe, located belt, strain spring. Exc. All the fitting are processed specially.
走马锭的组成部分：内芯管、定位肖、张力弹簧等所有核心配件均经过特殊超精密处理；
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