The invention provides a large ring lactone compound and a preparation method thereof.
本发明提供了一种大环内酯类化合物及其制备方法。
The drive pinion is meshed with a large ring gear so that the ring gear revolves with the pinion.
传动齿轮与一个很大的冠状齿轮啮合，传动齿轮驱动冠状齿轮。
In order to protect the moon, the children have to come up with a large ring of the dragons away.
为了保护月亮，孩子们要弄出很大的响动把龙吓跑。
The paper discussed the structure characteristic of the large ring-gear and the rationality of its current technological process;
本文论述了大型齿圈的结构特征及其现行工艺的合理性；
The flywheel also has a large ring gear at its outer edge, which engages with a pinion gear on the starter motor during engine cranking.
在飞轮的外缘(压)有一齿环，在发动起动时，齿与起动机的驱动小齿轮啮合。
The flywheel also has a large ring gear at its outer edge, which engages with a pinion gear on the starter motor during engine cranking.
飞轮也有其外缘，并与一对在发动机手摇起动电机齿轮齿圈齿轮搞大。
Remark: the use of such ring and its notice shall refer to the state standard GB5974.2-86, and special production is to be given to super large ring.
注：此套环有关使用要求与注意事项请参考国家标准GB5974.2- 86规定，超大型套环给予特殊制作。
Remark: the use of such ring and its notice shall refer to the state standard GB5974.1-86, and special production is to be given to super large ring.
注：此套环有关使用要求与注意事项请参考国家标准GB5974.1- 86规定，超大型套环给予特殊制作。
Research progress regarding the use of PET reactions on synthesis of medium to large ring compounds and the prospects of their applications were introduced.
综述了利用分子内的光诱导电子转移反应合成中到大环化合物的进展。
It is demonstrated that the composition of alloy, type of carrier, and large ring coordinate compounds are directly linked to activity and stability of anode catalysts.
有关研究表明，合金组成、催化剂载体以及大环配合物对阳极催化剂的催化活性和稳定性有着直接的影响。
They all sat down at once, in a large ring, with the Mouse in the middle. Alice kept her eyes anxiously fixed on it, for she felt sure she would catch a bad cold if she did not get dry very soon.
他们立即都坐下了，围成一个大圈，老鼠在中间，爱丽丝焦急地盯着它，她很清楚，如果湿衣服不能很快干的活，她会得重感冒的。
The Cartwheel Galaxy shows a ring that is the result of a collision between a small and a large galaxy.
车轮星系呈现出一个由大小两个星系碰撞而形成的光环。
The Ring of Fire is a chain of large faults associated with the Pacific plate’s interaction with surrounding plates, which can produce earthquakes and volcanoes.
所谓的“火焰圈”是一个大型地质断层，形成于太平洋板块和其他版块交界处，由于地质活动频繁，常导致地震和火山。
Banks will be able to decide whether some of their businesses, such as banking services for large corporations, be placed within the ring-fenced business.
银行将能够决定它们的某些业务，如对大型机构的银行业务，是否属于“围栅”之内的业务。
Over the weekend, physicists began circulating beams of protons around the 27-kilometre ring of the Large Hadron Collider (LHC) at CERN, Europe's particle-physics laboratory near Geneva, Switzerland.
大型强子对撞机在位于日内瓦附近欧洲粒子物理实验室的欧洲核子中心。从周末开始，物理学家们在LHC周长为27公里的圆环内，开始质子束流的调束工作。
A large opening in the elliptical ring is intended to invite passersby into the internal courtyard.
椭圆环中的大开口旨在邀请路人进入内部庭院。
There are several levels of lava platform in the park, the main ring lava ring platform, ring volcanic cone lava platform and the overflow of lava platform, large area, gentle slope.
公园内有数级熔岩台地，主要有环火山口熔岩台地、环火山锥熔岩台地和裂隙溢出的熔岩台地，面积大、坡度平缓。
Featuring a large diamond flanked by two ruby baguettes, this three-part ring was designed to resemble the Danish flag.
这枚戒指上有一颗巨大的钻石，旁边是两颗方形红宝石，戒指设计成由三部分组成，是为了看起来像丹麦国旗。
Collapsible Coiler - Rotates on Large Ball Bearings? Power Drive Assembly or Hand Operated? Large Heavy Duty Casters? Floor Lock Brakes? Guide ring? Tool and Tag Tray.
可折叠，绕在大滚珠轴承上？电力驱动或手动？重型大脚轮？地面锁制动器？导向环？工具和配件存储盘。
Due to the large size of the deaerator water tank of a nuclear power station, in-situ welding is required for 2 ring butt welds, causing difficulties in welding and heat treatment.
某核电站除氧器水箱尺寸较大，其2条环焊缝需在现场拼焊，焊接和热处理难度很大。
Here is the national key scenic spots: There are history textbooks, leading to ring at large in the mountain village.
这里是全国重点风景名胜区：有历史的教科书，在通往山巅的环线栈道上。
The design calculation of the large O ring rubber self energized seal (without bolt and nut )used for the vacuum equipment and its application results are introduced.
介绍真空设备法兰采用大直径O形环橡胶自紧式密封（不用螺栓和螺母）的设计计算及其应用效果。
The technique and its principle of high temperature strain measurement are introduced to determine heat sleeve stress about rotor retaining ring of large turbogenerator.
本文简要介绍了高温应变测量原理和技术在大型汽轮发电机转子护环热套应力测试中的成功应用。
Later, in London Burao Dayton a large-scale construction of the stadium, as a specialized organization of boxing ring and the centre.
后来布劳顿还在伦敦建造一所大型竞技场，作为专门教授拳击和组织拳赛的中心。
The results show that the toroidal shell is a good type of compression ring for large scale storage tanks as well.
实验还表明对于大型拱顶储罐，采用圆环壳型的承压圈有较好的承载能力， 这是一种合理的结构型式。
The results show that the toroidal shell is a good type of compression ring for large scale storage tanks as well.
实验还表明对于大型拱顶储罐，采用圆环壳型的承压圈有较好的承载能力， 这是一种合理的结构型式。
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