On the base of the single-diameter laser-scanned measuring technology, a double direction laser-scanned measuring system is presented. Which combinate the laser-scanned measuring technology with special optical system. In the system, the collimation semiconductor laser-scanned beam scanning two perpendiculars direct of one plane of the measured workpiece at the same time is made. The beams with the dimension information of two perpendiculars direct are processed by the scanning receive system, the high-speed photoelectric transition and electronic data process. Two measured results of the diametric directs and ellipse tolerance,etc, parameter, of the turning workpiece on the same plane are obtained by non-contact automatic measurement. The problem of non-contact measurement of two perpendiculars direct of one plane of turning workpiece is settled. It processes many peculiarities, such as high speed, high accuracy and non-contact automatic measurement, etc.

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In the system , the collimation semiconductor laser - scanned beam scanning two perpendiculars direct of one plane of the measured workpiece at the same time is made . the beams with the dimension information of two perpendiculars direct are processed by the scanning receive system , the high - speed photoelectric transition and electronic data process . two measured results of the diametric directs and ellipse tolerance , etc , parameter , of the turning workpiece on the same plane are obtained by non - contact automatic measurement

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His plan is to drop perpendiculars from each point of the curve upon two planes intersecting at right angles.

他的計劃是：從曲線的每個點處作線段垂直于兩個互相垂直的平面精品浮力影院一区二区。

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A square has four 90-degree angles made by its four perpendiculars.

正方形有四個直角无码免费毛片一区二区。

between perpendiculars：垂線間

between decks 甲板空間 | between perpendiculars 垂線間 | between perpendiculars 垂線間垂線間垂線間的

between perpendiculars：垂線間的

between perpendiculars 垂線間垂線間垂線間的 | between perpendiculars 垂線間的 | between wind and water 船體沿水線部分

between perpendiculars：垂線間垂線間垂線間的

between perpendiculars 垂線間 | between perpendiculars 垂線間垂線間垂線間的 | between perpendiculars 垂線間的

lengthbetween perpendiculars：(船)垂線間長,兩柱間長

innerbottom plating 雙層底內鋪板,內底板 | lengthbetween perpendiculars (船)垂線間長,兩柱間長 | bypassvalve 旁通閥,輔助閥,回流閥

length between perpendiculars：兩柱間長

L iron 不等邊角鐵、不等邊角鋼 | length between perpendiculars 兩柱間長 | length overall 總長