bench mark造句怎么写

Noting how long the task takes to do is useful because it will give you a bench mark against which to measure your worker's skill.

Finally, we suggested that the problem on stability of the bench mark may be settled in certain area by using the bench mark with a casing pipe buried in the proper depth of soil stratum.

Method for evaluating the performance of such bed rock bench marks is also proposed on the basis of in situ measurement at Jinxian and Xianggongzhuang Stations.