由已知控制点出发，不附合、不闭合于任何已知点的导线。
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并且要检查前后两支导线板装入后，其线槽中心是不是等高。
And to check before and after the two wire plate load, the center of the wire slot is not high.
该文介绍了公路测量导线的概念，提出了一种以公路测量导线为基线的支距法进行公路中桩放样。
In this paper, the concept of highway measure traverse line is introduced and a new offset method based on measure traverse line is brought forward.
患者均进行了三腔双心室同步起搏，起搏电极导线分别置于右心房、右心室以及经由冠状静脉窦置于一支心脏静脉起搏左心室。
All of them received three chamber biventricular pacing and the left ventricular pacing lead was inserted into a cardiac vein through coronary sinus.
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