1.The prototype measurement of retaining wall reinforced by a new type of wedgy tied-reinforcement
一种新型楔形拉筋加筋土挡墙的原型观测
2.Geometry model of roller bit's sphere tooth, wedgy tooth and bucket shape tooth were established;
建立了牙轮钻头的球形齿、楔形齿和勺形齿三维空间的几何模型;