By selecting test equipment and using high precision scaling device or precisely measuring the primary scale, an accurate testing of cold-rolled and twisted steel bar may be realized.
通过正确选择（或改进） 测试设备和使用高精度刻标机或精确测量原始标距等手段，即可实现冷轧扭钢筋的正确检测。
When testing, it is more likely for cold-rolled and twisted steel bar to be broken in fixture and so that its plasticity can hardly be precisely measured.
冷轧扭钢筋在检测时，试样易在夹具内断裂，其塑性难以精确测定。
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