随着造孔剂含量的增加，预制体气孔率升高。
The porosity of preforms increased with the increase of starch contents.
制备了一种用于制造球形中空催化剂载体的造孔材料。
This article researched on hollow-making martiral used for making middle-hollow round catalysis carrier.
主要是采用风动潜孔锤同步跟管钻具造孔，可控灌浆技术进行灌浆堵漏。
The hole is drilled by downing hole hammer and controllable grouting is used in prevention with ideal result.
应用推荐