直角

The two guide edge of the sheet must be square.

纸的两 个纸规边要成直角。

Why has everything got to be vertical, straight, unbend ing, only at right angles--and functional?

为什么每样东西都要垂直、笔直、挺直，只能是直角，而且有实用功能？

Redundant driving structure designed based on a new type of universal Cartesian serial-parallel manipulator, kinetics equations and Euler equations constructed, complete analysis of each jointed points of the moving platform carried out, inverse kinetics solution can be obtained with the given parameters, which include the position and orientation of the manipulator, applied force on the output shaft, parameters of motion of output shaft and connecting bar and sliding block, computer programming adopted to get the valid data and its figure, thus found the perfect show of this redundant driving structure compared to the primary mechanism without redundant driving.

对全新结构的万能直角串并联机构进行冗余驱动设计，通过建立动力学万程和欧拉方程，对机构的动平台各输入铰点处的受力状况进行了全面的分析，已知机构在给定空间位置和姿态下的输出端的受力、主轴的运动参数、连杆的运动参数、水平和垂直运动滑块的运动参数时，可以反向求解机构约动力学反解，通过计算机语言编程计算和绘图得至（直观有效的结果数据，由此得知冗余驱动在改善原机构的动力学特性方面的良好表现。

As Yukio Hatoyama wants Japan to interact more with China, the right triangle in which China is at the vertex of a small acute angle and Japan and the US at the other two vertices may become one that is more like an equilateral triangle. Clearly, Yukio Hatoyama sets greater store by China than Taro Aso.

鸠山由纪夫的外交理念是增加与中国的互动，人们也许会看到东北亚中、美、日三角，会由往昔的直角三角形的美日在一边而中国在另一边，调整到类似等边三角形。

Then the vertical angle, I jumped from the wells back to you, then pull your line, we have

然后垂直角，我从你背上跳出井，然后再拉你，我们都能有救了。

Rectangle goes with four equal lines and vertical angles.

正方形有四条等边和四个直角。

The horizontal angles and vertical angles were measured by aiming at target outline, by which the horizontal displacement and inclination ratios were calculated. Measurement precision of the method was analysed by the least square principle.

利用非接触的方法切准待测目标的外轮廓，测量其水平方向角和竖直角，依据测角度推算水平偏移量和倾斜率，并根据最小二乘原理分析了其测量精度。

The new generation plant (sold to French Révillon Chocolatier du Coteau) is a twolines squarely arranged moulding plant of the Chocostar series.

新型发电设备（卖给法国 Révillon Chocolatier du Coteau ）是一台 Chocostar 系列的双线直角成型机械。

The aim of this study was to reveal the adaptation response of limestone plants to light and water. The light response curves of limestone plants Alchornea trewioides, Bauhinia championii, Pteroceltis tatarinowii, Sapium rotundi folium were measured with Licor-6400 Photosynthesis Analyzer in Karst area, and parameters of photosynthesis were simulated by non-rectangle hyperbolae function.

为阐明石山植物对光与水分的适应能力，采用Li-6400光合作用测定系统，对岩溶区石山植物红背山麻杆、九龙藤、青檀和圆叶乌柏生长盛期的光响应曲线进行了测定，并利用非直角双曲线模型对4种植物光合作用生理参数进行拟合。

The thoracoscopy operation group used femoral artery and vein cannulation to establish CPB; Right arillary minithoracotomy group used ascending aorta and right angle vena cava cannulation to establish CPB; Median sternotomy group used regular cannulation to establish CPB.

59例房间隔缺损患者分别采用：胸壁打孔全胸腔镜(15例)、右腋下小切口(19例)及胸骨正中切口(25例)三种术式完成，胸腔镜组采用股动、静脉插管建立CPB；右液下小切口采用升主动脉、直角腔静脉插管建立CPB；正中切口采取常规插管方法建立CPB。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。