An optional fiberglass mat or flexible membrane can be added for crack bridging and movement of the concrete. 可选的玻璃纤维垫或弹性膜可以配合该系统修补混凝土的裂缝。
According to the oscillation theory of membrane, the inherence frequency and basic frequency of the flexible membrane are obtained. 根据薄膜振动理论得到了弹性膜片的固有频率和基频。
