查询词典 ring in

Tianjin, one of the four municipalities directly under the Central Government, is the door of Beijing, capital of China. In 1997, the State Council described her as the economic center of the Bohai-Sea-Ring area, as well as an important economic center of northern China. This function description has the following meanings: on the one hand, the development of Tianjin must eradiate the Bohai-Sea-Ring area, the north of China and even the whole nation; on the other hand, it requests Tianjin to step up to a higher position, function and influence in multinational regional cooperation, and hence to form an important base and green channel on economy cooperation in northern China.

天津作为中国四大直辖市之一，是首都北京的门户。1997年国务院将其定位为环渤海的经济中心和我国北方重要的经济中心，这一功能定位意味着：一方面要求天津的发展要辐射于环渤海地区，辐射于我国北方地区乃至辐射于全国；另一方面要求提升天津在跨国区域合作中的地位、作用和影响，形成中国北方对外经济合作的重要基地和绿色通道。

FT-Raman, normal Raman spectra of artemisinin in solid state and surface-enhanced Raman scattering spectra of 1 ?10-5 mol/L artemisinin aqueous solution were recorded. 1756 Cm-1 hexat. lactonic ring vibration which was shown strong in FT-Raman and normal Raman spectra disappeared in SERS spectra. This phenomenon appeared to result from the broken of lactonic ring.

本文对固态青蒿素的FT-Raman光谱和普通Raman光谱以及低浓度(1×10^-^5mol/L)青蒿素水溶液的表面增强Raman散射光谱进行了检测，着重观察了1756cm^-^1六元内酯环振动谱带，发现其在FT-Raman和普通Raman光谱中表现为强振动，而在SERS光谱中此振动谱带消失，说明分子内酯环发生了破裂。

This result again showed that in the process of the reaction of flavonoidswith α-hydroxy ethyl peroxyl radicals, 2,3-double bond in the C ring of flavonoidsplays a more important role than o-dihydroxy in the B ring.

这进一步说明了黄酮类化合物与有机过氧自由基反应的过程中C环2，3双键比B环邻二羟基起着更重要的作用。

It can beconcluded from the experimental results that in the reaction of flavonoids withα-hydroxy ethyl peroxyl radicals, 2,3-double bond in the C ring plays a moreimportant role than o-dihydroxy in the B ring.

从实验结果来看，在黄酮类化合物与有机过氧自由基反应的过程中，其分子结构中起主要作用的是C环2，3双键，而不是B环的邻二羟基。

The three-ring line in Beijing seems to be a small community of small nodes in major cities, small cities, so that it has been the rapid expansion forgotten, whether it is a natural social environment for the community or the community of life are floating population the surrounding high-rise buildings, bustling city noise out of tune, I lived just a few days, so I can not judge how he formed, but her presence is the first time I came to Beijing to surprise some people, the tension of Beijing has been expanding beyond the three-ring style, and even farther into the tetracyclic rings greater geographical direction, but this community did not catch up with this tide, he just quietly watching the dramatic changes around, and silence in their own small world.

这个位于北京三环线上的小社区似乎是一个大城市中的小节点，小的让它在城市的急速扩张中被人遗忘，无论是社区的自然社会环境还是社区中生活的外来流动人口都与周围的高楼大厦、喧嚣的城市繁华格格不入，我才刚刚生活了几天的时间，所以我无法判断他如何形成，但她的存在还是让我这个第一次来北京的人有些吃惊，北京城的张力已经膨胀式的越过了三环，冲向四环五环乃至更远更大的地理方向，但是这样的社区却没有赶上这样的潮头，他只是默默的关注着周围发生的剧烈变化，而沉默于自己小世界里。

Secondly, the energy levels of every layer in a designed device have to be matched each other.Quantum chemical calculations were carried out in order to investigate the photoelectric performance of our target molecules. According to the results of our quantum chemical calculations, the HOMOs are usually distributed along the thiophene-perfluorocyclopentene-thiophene skeleton of diarylethene molecule in both of the open-ring state and closed-ring state.

实验表明，在阻挡层式光控载流子开关器件的设计中，要实现完全意义上的ON-OFF全开关，必须满足两个条件：一是作为光控载流子开关层的二芳基乙烯材料，必须具备足够大的开环态和闭环态之间的HOMO能级差异，在一种状态下有利于载流子的传输，在另一种状态下则可以顺利地阻挡载流子的传输；二是器件的各材料层之间的能级一定要互相匹配。

The critical shear stress unpinning the 60 dislocation from the ring-shaped hexagonal vacancy defect decreases as the temperature increases in the models, and approaches a stable value of 0.6GPa as the temperature is higher than 300K, bellow the misfit stress in common SiGe heterostructures, which indicates that the 60 dislocation can not be pinned by the ring-shaped hexagonal vacancy defects in this case.

模拟结果表明：使位错不被钉扎住的临界外加剪应力随着温度的上升而减小，在上述模型中当温度达到300K以上就稳定于0.6GPa附近，小于SiGe体系中的失配应力，说明空位缺陷不会成为60位错的钉扎点，仅会对其运动产生迟滞。

In order to avoid stress concentration which result in the break of the ring carrier, this paper made a Finite Element analysis of the ring carrier inserted in the piston of a high-power medium speed diesel engine using ANSYS.

为消除某中速柴油机活塞镶圈在热负荷状态下产生应力集中而发生断裂现象，采用ANSYS有限元分析软件对该合金钢活塞镶圈进行有限元分析。

In addition, it should be noted in swimming before the baby feed睡足, swimming is physical power, he is hungry will cry; Dai beach in the circle, we must note that some laps with long aging hard edge , your baby will cry uncomfortable wearing ring before hand to check all the inner ring; sometimes lap swimming wear well, because the baby will be uncomfortable而哭; temperature unsuitable he would cry.

此外，应该注意在游泳前让孩子吃饱、睡足，游泳很耗体力，他饿了也会哭的；在戴泳圈时也要注意，有的圈用久了边老化很硬，孩子不舒服也会哭，戴圈前请用手把内圈全部检查一遍；有时泳圈戴不好，孩子也会因为不舒服而哭；水温不合适他也会哭。

The analysis shows that with given grid size higher accurate difference scheme can give higher resolutions with wider range of scales, or with given accuracy large grid size can be used for the higher accurate difference scheme. The second part is the numerical simulation of two-dimensional axisymmetric jet. The simulation results show the structure in the near field and the initial transition. In the near field, Kelvin-Helmholtz instability leads to the formation of vortex ring, and nonlinear growth leads to the merging of vortex ring. This is the main instability form. Under the assumption of axisymmetry and two-dimensional computing conditions, the results are applicable only in the near field.

第二部分采用高精度的差分格式对二维轴对称射流进行了数值模拟，模拟结果显示了射流流场结构和涡结构的发展过程，在射流流场近区，K-H失稳导致涡环的产生以及非线性效应的增长导致涡环的对并是射流失稳的主要形式；分析指出在轴对称假设下的射流数值模拟只适用于射流近区的分析。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。