cost estimating造句

1、Which of the following techniques for cost estimating is considered the least accurate?
下列哪一项估算成本的技术是最不准确的?。

2、The Cost Estimating of Foundry Technological Process
铸造工艺过程成本的估算

3、Cost estimating is one of the most important steps in project management.
成本估算是项目管理中最重要的环节之一。