straightedge

Long standing questions about compass and straightedge construction were finally settled by Galois theory .

长期存在的问题，指南针和直尺建设的最后解决伽罗瓦理论。

A number of ancient problems concerning Compass and straightedge constructions were finally solved using Galois theory .

从目前的罗盘和直尺古代建筑的一些问题终于解决了使用伽罗瓦理论。

Direct graphing of the two basic proportions in the graphing without straightedge

无尺作图中两个基本作图命题的直接作图

Simplification of basic graphing system in graphing without straightedge

无尺作图的基础作图体系的简化

Manufacture Specification of Gear with Straightedge and cone

直齿圆锥齿轮的加工工艺规程

Each step of the construction of a circle with straightedge and compass calls for finding a point of intersection .

用圆规、直尺作圆的每一步都需要找一个交点。

Test Scale of Straightedge Using Morire fringe

利用莫阿条纹检验直尺刻度

With straightedge and compasses , divide a segment of a into 2 parts .

用直尺和圆规把线段a分成两部分。

Then it is proved that all solvable graphing problems of geometry and their solutions can " be translated " into correspondent problems and solutions in the graphing without straightedge , where our conclusion is reached .

使用替代操作就能把任何有解的几何作图问题和它的求解，一同翻译成相应的无尺作图问题及其求解，从而导出结论；

Based on introduction of knowledge about algebraic operation among line seg-ments , it is discussed how to diagram the conic section and its evolute , some non-conic section using compasses and straightedge in this paper .

在介绍用规尺进行线段之间代数运算知识的基础上，讨论如何利用规尺作图法作出圆锥曲线及其渐屈线、某些非圆锥曲线的图象。

METHODS : Sixty adult corpses were measured with the vernier of 0.02 mm accuracy and straightedge : ① The external diameter ( E-diameter ) of sulcus of spinal nerve and the transverse diameter of anterior branch ( A-diameter ) of spinal nerve in its sulcus .

方法：在60具成尸上，用精确度0.02mm的游标卡尺和直角规测量：①脊神经沟外口宽度及其沟内段脊神经前支横径。

The level of medial epicondyle of femur was taker as mark point to measure the position , thickness and length of all muscle nerves and their final branches with vernier caliper ( Accuracy is 0.02mm ), straightedge ( Accuracy is 1mm ), compasses and protractor .

用游标卡尺（精确度0.02mm），直尺（精确度1mm），圆规和量角器，以股骨内上髁水平为标志点对各神经肌支及其终支的位置、粗细和长度进行测量。