其间用到的实验工具包括调查问卷，前测和后测。
Instruments used in the research include questionnaires, pre-test and post-test.
逐点接近法是路基施工前测设边桩最普遍使用的方法。
The approaching method spot by spot is the way generally used in measuring the side pile before the road bed construction.
该实验过程主要包括前测，实验培训过程和后测三个阶段。
The experiment includes three steps:the pre-test, the process of developing CC and the post test.
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