Being refused and complaining is a common occurrence. Only can you be the strong spring, your self-repairingcapability could be stronger.
被人拒绝和抱怨是家常便饭，唯有你是优质弹簧，修复能力才会更强！
2
Repairing concrete crack through embedded pipe is a new attempt in the field of structure repairing and a preparation for a kind of intelligent concrete with self-healing capability.