drawn bond meaning in English

抽签兑换债券
中签债券

The bond effect of various bond material is also researched by use of the test of pored - drilled drawing bond between new and old concretes . this paper also makes a contrast with the effect of mortars " bond , which offers a meaningful reference on how to choose bond materials and to appraise the bond effect
并通过新老混凝土钻芯拉拔粘结试验，研究了不同界面粘结材料的新老混凝土粘结效果，并与其砂浆粘结试验结果进行了对比，对实际工程应用中正确选用界面粘结材料及评价粘结效果具有一定的指导意义。