Register for the operation

...n terms of) » Waste of time is low on entertainment and expensive (in terms of) 作业登记本 » Register for the operation 经720小时盐雾实验后，目测无明显气泡，色差，脱落，但局部有出现锈斑，综合评定等级为2级 » After 720 hours salt spray test, ...