切割

How many equal three-dimensional spaces would a hypersphere be cut into by hyperplanes at right angles to each other?

一个超球面被切割成相互垂直的超平面会产生多少三维空间？

The numerical control part uses Hypertherm Automation EDGE or CMC BURNY. The cutting system is Hypertherm HD3070、HD4070 and HPR130 Hydefinetion plasma machine, the Torch Height Control System is HYPERTHERM COMMAND THC.

数控系统采用美国海宝自动化公司EDGE数控系统或美国CMC公司BURNY数控系统；等离子切割系统采用美国海宝HPR260及HPR130高精细等离子电源；调高装置采用美国海宝COMMAND THC自动弧压高系统。

The processing of making birefringence Iceland glassy prism from calcite crystal, which included orientation, cutting, grinding, polishing, coating, testing of extinction index and so on, were described.

介绍了双折射晶体方解石的加工工艺过程，包括对双折射方解石晶体进行定向、切割、研磨、抛光、消光比的测定等。

The testing screen is to divide each question into two sections, present an identical fraction in different graphy representation .The teammates examinee can discuss and observe mutally on the test, and get the answer in signal or literal representation.

测验画面是将同一组的试窗切割成两个子画面，用不同的图形表徵来呈现同一个分数题目，测验时可以彼此讨论并及时观察到组员的作答情形。

The purpose of this thesis is to explore the image segmentation using Level Set Methods.

本研究的主要目的是研究使用等位函数法的动态曲线影像切割法。

According to the invention said periodical motion is effected in an imaginary plane which extends transversely to the cutting edge (23) and which has a first motion portion (89) and a second motion portion (91) following the first motion portion.

按照本发明，所述周期性运动是在一个横交于切割刃(23)而延伸的假想平面内实现的并有一第一运动部分(89)和一跟随第一运动部分的第二运动部分(91)。

The tongue is imaginatively cut into three sections: front, central and back.

舌想象力切割成三个部分：前，中环及备份。

The carboxylicgroup was not the necessary group. The presence of the imidazole group wouldenhance the cleavage activity.

羧基不是必需基团，咪唑基的存在可以使丝组二肽具有较高的切割活性。

The effects of the amino, hydroxyl, imidazole and carboxylic groups of Ser-Hison DNA cleavage reaction were studied.

此外，还发现Ser-His对5＇-TpTpdC-3＇具有切割活性。

Finally, by studying on using saw blades with different matrices cutting different stones, a basic compatibility rule about matrices and stones was concluded, say, when cutting a hard, high quartz and high alkalifeldspar content and strong bonded stone, a high impact strength and low wear-resistance matrix should be chosen; otherwise, when cutting a soft, low quartz or no quartz content and weak bonded stone, a high bending strength, low impact strength and high wear-resistance matrix should be chosen.

最后，通过对不同性能结合剂的锯片切割不同石材的切削寿命和磨损状态分析，得出了锯片结合剂性能与岩石性质之间的一般性匹配原则：即对于坚硬的、高石英含量的花岗岩，宜选用高强度、高冲击韧性、低耐磨性和对金刚石具有良好粘结性能的结合剂；对于低硬度、无石英或低石英含量的易切削花岗岩，宜选用高强度、高耐磨性和低冲击韧性的结合剂。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。