The synthetic method is simple and convenient and direct; and the spiral ring skeleton obtained from spiro-diketone has optical pure chiral ligand with different absolute configurations.
本发明的合成方法简便直接，从外消旋的螺环二酮出发得到螺环骨架具有不同绝对构型的光 学纯的手性配体。
I stopped to look at Mosh Shternberg’s silver work and bought a spiral-shaped ring that wraps around my ring finger, for the equivalent then of about $37.
我在摩西 希腾堡银器店停下脚步，买了一只螺旋状的戒指戴在无名指上，这只戒指的价值相当于37美元。
A screwdriver is used to remove the spiral seat retainer ring from its groove.
采用一把螺丝刀从凹槽中拆卸螺旋阀座定位器环。
With this distinctive central star-forming ring, and the addition of numerous bluish clusters of hot, young stars dotted through its spiral arms, NGC 1097 makes a stunning visual object.
有着与众不同的中心恒星环，旋臂上还点缀着大量炽热的年轻恒星组成的蓝巨星簇，NGC 1097就成为绝佳的观测目标。
Valves in these classes are also available with spiral wound or ring joint gaskets when specified.
如果用户要求，这些压力等级的阀门也可提供螺旋盘绕或环连接垫圈。
The numerical results show that the ring targets or spiral waves generated by cardiac action potential affect the cardiac rhythm greatly.
数值分析结果表明，心肌动作电位形成的靶环波和螺旋波对心脏节律影响较大。
The most common method is clipper and spiral seam. It can connect the filter fabrics and filter screens effectively into ring, long life time, no wrinkles.
最常用的是钢扣连接，螺旋连接，能有效将滤布、滤网连成环形，并且使用寿命长，滤布不打皱。
Harry hurried over to the door leading to the spiral staircase, but his hand had only just closed upon the iron ring of the door when he heard running footsteps on the other side.
哈利匆匆跑向旋转楼梯的门，但他刚握住铁门环，就听见门的另一边传来奔跑的脚步声。
Usage: Gently massage skin using spiral movement with ring finger to promote absorption, tender eye skin won't feel any burden.
使用方法：用无名指腹以打圈的方式轻轻按摩，令其吸收迅速，娇嫩眼周不觉任何负担。
Conclusion Spiral ct in the diagnosis of ectopic intrauterine contraceptive ring has high clinical value.
结论多层螺旋CT对诊断宫内节育环异位具有较高临床应用价值。
Since vegetable growth, along with all life, extends itself in spiral motion, it would circumambulate the grid from center ring to outer, just as price and time do on Gann's calculators.
这个宇宙人在格子中旋转，并象蔬菜生长一样，在螺旋运动中使自己变大变强壮，这不就是江恩所说的时间和代价的运动吗？
Results For 26 patients with surgically confirmed ectopic intrauterine contraceptive ring, the use of spiral ct MPR technology can make the correct diagnosis.
结果26例经手术证实的宫内节育环异位，利用多层螺旋CT多平面重组技术能做出正确诊断。
The water filling and pressure maintaining system mainly included: pressure pump and its control device, blockage end at the spiral case inlet, sealing ring on the stay ring of turbine, etc.
蜗壳内充水保压系统，主要包括加压水泵及其控制装置、蜗壳进口闷头、座环密封环等组成。
In such cases, can switch to spiral wound gasket, "o" ring and so on, are now a number of factories he already adopted.
遇到这种情况，可改用缠绕垫片，“O”形环等，现在许多厂已采用。
Exquisite Enamel Inlay in the glittering colors, ring side with Hua Love's iconic gold prepared spiral like flowers, to create a "guardian angel" rotating ring.
精致的珐琅镶嵌于波光粼粼的色调中，打造出“守护天使”旋转指环。最是那不经意的旋转，像爱人的心有灵犀，唯你我之间不言而喻的情感，在转动的指环中传递诠释。
The utility model relates to a back wheel of a spiral plowing farmland tillage tool, which comprises a ring blade, a back wheel made form rubber or other materials, and a back wheel fork.
本实用新型是一种旋耕式农田耕作机械的尾轮。它由环型刀片，胶尾轮或其它材料制成的尾轮，尾轮叉组成。
The lubrication system design inside Spiral Conical Dispenser including: the total theory, the key and the design for Dispensing Ring, the strength checkout of the hollow axle and etc;
出灰机内注油系统设计：总体原理、分配环设计与关键、空心滚轮轴强度校核等；
The lubrication system design inside Spiral Conical Dispenser including: the total theory, the key and the design for Dispensing Ring, the strength checkout of the hollow axle and etc;
出灰机内注油系统设计：总体原理、分配环设计与关键、空心滚轮轴强度校核等；
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