Канад дахь бөмбөлөгт тээрмийн ашиглалтын засвар үйлчилгээ
Oct 16, 2015· Maintenance and repair / Үйлчилгээ ба засвар There are no definite line of division between maintenance and repair. It is usual to say that maintenance includes items such as cleaning, inspection, adjustment, routine replacements, and hard face or other build - up welding, while repair consists of fixing or ...
WhatsApp)
