圆

This article describes the important role of precise circular slitting knife in metal sheet slitting,as well as the right way to use them.

详细地叙述了精密分条圆盘刀片在金属薄板精密剪切中的重要性，并介绍了圆盘刀片的正确使用方法。

In a near future triple O or multiple O tunnels might be snaking through China's ancient land.

在不久的将来，三圆乃至多圆隧道也将可能穿行于神州大地。

The conditions to measure accurately and the principles to select parameters of the multi— probes EST method are proposed, and the theoretical research, computer imitation and the experiment on a machine tool prove that these principles and suggestion are necessary and effective. The influence of the initial value errors of the probes, the installation error of the probes system, and the remaining error caused by the radical error motion are analyzed quantitively on the measurement accuracy of the multi—probes EST method. The influence of the error caused by the probe's axes which is not in a plane and the perpendicularity error of the plane which the probe's axes is in to the stational axis are discussed on the measurement results.

结合理论分析，对这些EST方法进行了计算机仿真分析和研究，重点研究了这些方法的应用条件和误差分离精度，所得出的结论是：三测头法EST基本上能实现各项误差的完全分离，适于在位测量使用；二测头法在恰当地选择测头安装角的条件下，可以得到较高测量精度，适于大型零件圆度、圆柱度、径向圆跳动和全跳动的在位测量；对置两测头时域法可以在一定程度上改善单测头法测量精度，但对随机径向误差无能为力；对置两测头频域法存在严重的谐波损失。

The research aimed to investigate the species of strongyloid nematodes in the donkeys and provide theoretical basis for the taxonomy and control of parasitic, diseases.

［目的］调查驴肠道寄生圆线虫的种类，为圆线虫的分类研究和防治提供依据。

Petiole 8-20 cm, glabrous; leaf blade 5-7-foliolate; leaflets sessile, abaxially green, oblanceolate, 10-25 × 5-12 cm, abaxially glabrous or with sparse whitish hairs, ferruginous tomentose at base and in axils of lateral veins, base cuneate, margin crenate-serrate with teeth crenulate-serrulate, apex acuminate to subcaudate; lateral veins in 18-25 pairs.

叶柄8-20厘米，无毛；叶片5-7具小叶；小叶无柄，背面绿色，倒披针形， 10-25 * 5-12 厘米，背面无毛或者有稀少带白色毛的，被锈色绒毛在基部和在侧脉腋处，基部楔形，边圆齿状锯齿具细圆齿到细锯齿的牙齿，18-25对的侧脉。

Methods Supraorbital foramen, infraobital foramen and oval foramen radiofrequency thermocoagnlation were performed on 64 patients with trigeminal neuralgia.

分别采用眶上孔、眶下孔、侧入路卵圆孔或Hartel前入路卵圆孔穿刺法，射频温控热凝术治疗三叉神经痛64例。

During the period of past three years, the project finished the research of conservation biology on the four endangered and endemic plants from Theaceae. Their detail distribution and living states were completely investigated, about 120 indivaduals of the critically endangered Euryodendron excelsum and abandant individuals and population of Apterosperma oblata were newly found.

本项目三年来，通过对山茶科猪血木、圆籽荷、猴子木、厚皮香及长果核果茶等濒危和特有植物的保护生物学研究，摸清了其野外详细分布、生长状况，发现极度濒危植物猪血木的个体数为120余株、濒危植物圆籽荷仍有大量的个体和种群。

The main contents of the dissertation are as follow.Firstly, the data model and statistic model of UCA are introduced.

通过利用预处理技术把均匀圆阵可以转换为模式空间的虚拟均匀线阵，本文在所研究的信号处理方法中充分利用了圆阵的这一特性； 2。

The expressions of peanut agglutinin, phasolus vulgaris agglutinin, ulex europaeus agglutinin and soybean agglutinin receptors during hepatocarcinogenesis induced by chemical carcinogen were studied with affinitive histochemistry.

结果部分卵圆细胞、过渡细胞之PNA，PHA，UEA阳性；正常肝细胞、增生灶、增生结节之PNA，PHA，UEA，SBA均阴性；肝癌组织中PNA，PHA，UEA，SBA均阳性。④结论在致癌剂作用下所出现的卵圆细胞及其分化的过渡细胞，与肝癌细胞具有某些共同的糖结合蛋白。

The workpiece fixing with its sipindle hole. The spolting spindle is placed in disc worktable. Its working process is: anticipate on the artificial- automatic position- automatic clamp- automatic milling, after milling unclamped the work piece automatically and taken down the workpiece by the operator.

工件以其主轴孔定位，定位心轴置于圆盘工作台上，圆盘工作台主轴呈卧式安置；它的工作过程是：人工上料——自动定位——自动夹紧——自动铣削，铣毕自动松开工件后由操作者取下。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。