螺旋

Dragline is not sticky, so the spider can race back and forth along __4_it_ to spin the web's trademark spiral.

避敌丝不粘，因此蜘蛛可以沿着它来回活动编织，从而来编织网的标志性螺旋。

Based on the idea of the structure parametric design method, the parametric finite element model of drill chuck with complicated spiral surface character was established.'The related key technologies of drill chuck's strength analysis were discussed and solved, such as the contact analysis parameters selection, the boundary conditions and the load processing, ANSYS command一string building and so on.

本文采用结构参数化设计方法建立了含有复杂螺旋曲面特征的钻夹头参数化有限元模型；探讨和解决了钻夹头夹紧强度分析中夹爪与螺母接触分析参数的选择、约束边界和载荷处理、分析流程文件创建等关键技术问题。

Ball bearing, test bed, carrier rocket, pneumatic cushion, tractor shoe, monkey driver, ball cock, automatic pecker, worm auger, decay daughter, sister metal, foreign tissue, getter pump, ghost image, heel block, heartman, downer, at farm, mosquito bomb, plastic stockings, nose cap, flu mask, first aid, fire engine, skid chain, sweet water, drug-fast, vital capacity I-bar, O-ring, T-square, octahedron, zigzag chain, gable roof, cross stitch, set square, arch dam, cam shaft, cone buoy, U-bolt,?

滚珠轴承，实验台，运载火箭，气压式缓冲器，拖拉机履带片，锤式打桩机，球阀，自动穿孔器，螺旋钻，裂变产物，同类金属，异体组织，抽气泵，叠影，垫块，心脏移植者，镇静剂，减肥中心，杀蚊弹，玻璃丝袜，防毒面具，卫生口罩，急救，救火车，防滑链，饮用水，抗药性，肺活量工字梁，环形圈，丁字尺，八面体，Z形链，人字屋顶，十字缝，三角尺，拱坝，凸轮轴，锥形浮标，U形螺栓三、注意语义分析？

Ball bearing, test bed, carrier rocket, pneumatic cushion, tractor shoe, m onkey driver, ball cock, automatic pecker, worm auger, decay daughter, sister metal, foreign tissue, getter pump, ghost image, heel block, heartman, downer, at farm, mosquito bomb, plastic stockings, nose cap, flu mask, first aid, fire engine, skid chain, sweet water, drug-fast, vital capacity

滚珠轴承，实验台，运载火箭，气压式缓冲器，拖拉机履带片，锤式打桩机，球阀，自动穿孔器，螺旋钻，裂变产物，同类金属，异体组织，抽气泵，叠影，垫块，心脏移植者，镇静剂，减肥中心，杀蚊弹，玻璃丝袜，防毒面具，卫生口罩，急救，救火车，防滑链，饮用水，抗药性，肺活量

Ball bearing, test bed, carrier rocket, pneumatic cushion, tractor shoe, monkey driver, ball cock, automatic pecker, worm auger, decay daughter, sister metal, foreign tissue, getter pump, ghost image, heel block, heartman, downer, at farm, mosquito bomb, plastic stockings, nose cap, flu mask, first aid, fire engine, skid chain, sweet water, drug-fast, vital capacity

滚珠轴承，实验台，运载火箭，气压式缓冲器，拖拉机履带片，锤式打桩机，球阀，自动穿孔器，螺旋钻，裂变产物，同类金属，异体组织，抽气泵，叠影，垫块，心脏移植者，镇静剂，减肥中心，杀蚊弹，玻璃丝袜，防毒面具，卫生口罩，急救，救火车，防滑链，饮用水，抗药性，肺活量

The feasibility of this method is proved by the result of spiral groove dry gas seal, and the distribution law of T-groove dry gas seal liquid pressure field is gained.

利用目前研究较成熟的螺旋槽干气密封有限元分析结果，验证了使用Fluent软件的可行性，然后模拟仿真并分析得出了T型槽干气密封的三维压力场分布规律。

The structure of knowledge base for mechanism kinematic schemes, screw theory and dual vector representation are introduced briefly.

简要介绍了机械运动系统方案设计知识库的结构和螺旋理论及对偶矢量表达。

Methods Total 474 patients were performed with plain CT scanning. 167 patients underwent ducal and delayed dynamic contrast enhanced CT scanning. According to different diseases, multiple planar reconstruction and three dimensional volume reconstruction were used on 72 patients.

运用16层螺旋CT扫描速度快，重建功能强大的有利条件，对474例患者行泌尿系平扫，167例行双期、延迟期扫描，根据病变情况对72例进行了MPR、3D、CPR等重建。

Kept in accordance with the main livestock and poultry can be divided into:(1) pig farm equipment, mainly including the pigsty (sub isolated defecating type pigsty, ditches addition to manure type pigsty, some gap-type pigsty floors, full-seam floor and childbirth pigsty pigsty and other five), feeding equipment (with screw-type conveyor, reciprocating scraper type, scraper ring type, ring-chain plate and dilute feed, type and other types of pipeline transportation, as well as automatic feeding trough and a variety of feed trucks) and a drinking fountain ( There Duckbill type, cup type and nipple-type 3 type), in addition to fecal equipment with except feces forklifts, scraper-type reciprocating equipment, and water will, inter, inter dung manure equipment, etc.

按所饲养的主要畜禽可分为：（1）养猪场设备，主要包括猪栏（分隔离排粪式猪栏、明沟除粪式猪栏、部分缝隙地板式猪栏、全缝地板猪栏和分娩猪栏等五类）、喂饲设备（有螺旋输送式、往复刮板式、环形刮板式、环形链板式和稀饲料管道输送式等类型，还有自动饲槽和各种饲料车）、自动饮水器（有鸭嘴式、杯式和乳头式3个类型）、除粪设备（有除粪铲车、往复刮板式除粪设备和水冲除粪设备等）；（2）养牛场设备，主要有拴系、饲喂、饮水、除粪、挤奶、牛奶冷却、牛奶输送等设备；（3）养羊设备，主要是草场围栏、羊圈及剪毛机；（4）养鸡场设备，包括鸡笼、喂饲设备、饮水设备、除粪设备、孵化和育雏设备、集蛋装置和鸡粪热干燥设备等；（5）养鸭场设备，主要是自动填鸭器。

Reagents and so on temperature, organic solvent, potential of hydrogen, urea, amide may cause the DNA member to denaturate, even if hydrogen bond break between the DNA duplet bond's, the double helix structure unties.

温度、有机溶剂、酸碱度、尿素、酰胺等试剂都可以引起DNA分子变性，即使得DNA双键间的氢键断裂，双螺旋结构解开。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。