词汇	variation mechanism
释义	variation mechanism 变异机制
随便看	cost of service principle cost-of-service principle Cost-of-service regulation cost of service rendered cost of services cost of services principle cost-of-service taxation principle cost of service theory cost of set up cost of sharp tool cost of shifting cost of shifting ship cost of shifting the ship cost of shortages Cost of Sickness cost of silviculture cost of social development cost of software Cost of software quality cost of spoiled goods cost of staff cost of stamped part cost of starting up and adjustment works cost of state administration cost of steam production