Meanwhile the author studied the work cost and techniques in this measure, which was proved to be feasible in technology and worthwhile in economy.
同时，作者还分析了机耕整地的作业成本及所采取的技术培育措施，认为机耕整地造林在技术上是可行的，经济上是合算的。
Wearing test in laboratory and test in production show that service life of repaired parts is over two times longer than the new ones, and the work cost decreases by 49%-77%.
室内磨损试验及生产试验均证明了修复零件的使用寿命比新品提高一倍以上，作业成本降低49% - 77%。
Based on the comparison and the analysis of the norm method and the real object quantity method, they have the merit and defect in the work cost management of hydraulic and hydroelectric projects.
通过定额法与实物量法的比较分析，两者对水利水电工程造价管理具有一定的指导意义。
Based on the comparison and the analysis of the norm method and the real object quantity method, they have the merit and defect in the work cost management of hydraulic and hydroelectric projects.
通过定额法与实物量法的比较分析，两者对水利水电工程造价管理具有一定的指导意义。
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