气体净化管用气体的过滤，管内可充填各种填料（5A/13X/C/硅胶等）。 气体净化管两端接口能与各种进口，国产仪器连接。
Mainly used for gas chromatography and other analytical instrument gas supply system, gas purification pipe filter, tube can be filled with a variety of fillers (5A/13X/C/ silica gel, etc. ).
套管内砾石充填防砂是一种行之有效的防砂方法。
The gravel packing in casing is a effective method to prevent sand production.
方法自固化磷酸钙充填糊剂根管内注入后加牙胶尖挤压。
Methods: Tooth root Injected solidified calcium phosphate cataplasm tube, then pressed with gutta peneha points.
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