patch effect造句

• At last in actual project carring on the ordinary and fast patching concrete fieldwork test , polymer mortar patching fieldwork test and grouting patching . it results shows that the patching effect is so good as well as simple construction technics and low expense
  最后在实际工程现场进行了普通和快速修补混凝土现场试验、聚合物砂浆修补现场试验以及注浆修补现场试验,结果表明修补效果良好、施工工艺简单、费用较低。