给出判断空间两直线相关位置的一种新方法，并可由此直接得出两异面直线间的距离及公垂线的标准方程。
A new criteria method is provided to determine the relative locations of spatial lines, which deduces the distance and the common vertical line of two straight lines in different planes.
本发明涉及了一种测量河流中某垂线位置单位宽度流量及河流流量的方法。
The invention relates to a method for measuring the unit width discharge of a vertical line position in a river and the river discharge.
本实用新型公开了一种测波仪器用的电容式垂线传感器。
The utility model discloses a capacitance type vertical line transducer for a wave metre, which comprises a plurality of coaxial cables.
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