Is there a recurringcost or monthly membership payment?
是否有经常性费用或会员每月付款?
2
They look at recurring costs of existing standards versus the purchase cost and maintenance costs of buying new standards.
他们会查看现行标准的重现成本与新标准的成本和维护成本。
3
The methods of estimation of non-recurringcost and recurringcost of a satellite, analysis of cost present value and application of cost matrix are emphasized.