calibrated step wedge

例句：

1. 1. The engineer useda calibrated step wedge toensure the accuracy of the measurements.
   工程师使用一个校准步楔来确保测量的准确性。
2. 2.During the construction, the calibratedstep wedge was used to level theground.
   在施工过程中，校准步楔被用来平整地面。
3. 3. The calibratedstep wedge helped the builder to makeprecise cuts in the wood.
   校准步楔帮助建筑工人在木头上做出精确的切割。