环

If you do not like plain at all, you may opt for engraved ring or a ring with beaded edge.

如果你不喜欢平原所有，您可以选择刻有环或环的串珠优势。

It comprises a chassis, a bell cap, a begrime element and disperse oar. Wherein, said bell cap is mounted above the begrime element via the support element; the begrime element is mounted on the chassis which comprises a inner screen component, a outer screen component, a cover board and a chassis to form the annular space structure; stuffing or protective agent can be filled into annular space according to the demand; the inner cylinder formed by inner screen component is in the hollow cylinder structure; the part of chassis relative to the inner cylinder of inner screen component is on the open structure under which the disperse oar is mounted via the connection element.

包括底盘、泡帽、积垢部件和分散桨，泡帽通过支撑件固定在积垢部件上方，积垢部件固定在底盘上，其结构是内筛组件、外筛组件、盖板和底盘构成的环隙结构，环隙内根据需要使用填料或保护剂，内筛组件构成的内筒是空筒结构，底盘与内筛组件内筒对应部分为开口结构，开口结构下方是通过连接件固定的分散桨。

Further, the wider Belize reef system is considered one of the most endangered in the world.

除此之外，范围更大的贝里斯环礁系统也是公认举世受到威胁最严重的环礁之一。

Application to the design of powertrain control system shows the powerful strength of HIL simulation system. Bench test results show the accuracy of HIL simulation model and the satisfactory performance of the constant voltage control strategy.

硬件在环仿真系统在动力控制系统开发中得到了广泛的应用，并对恒压控制算法进行了台架试验，验证了硬件在环仿真系统的有效性。

A group of atoms bound in a structure, such as a benzene ring, that is resistant to alteration in chemical reactions.

环核包围在抗化学反应变化的结构中的一组原子，如苯环

A hydrocarbon derived from,or characterized by the presence of the benzene ring

芳烃 由苯环衍生出的、或因含有苯环而具有其特性的烃化物。

In the GC/MS analysis, lots of compounds containing benzene ring were detected.

在进一步的降解过程中，平菇表现了其自身特有的降解机制，取代苯环单体上的甲氧基为甲基，而后发生苯环的开裂，这与报道的白腐菌降解过程有所不同。

Chemistry A group of atoms bound in a structure, such as a benzene ring, that is resistant to alteration in chemical reactions.

环核：包围在抗化学反应变化的结构中的一组原子，如苯环

65 The methyl group on the benzene ring greatly facilitates the nitration of toluene.

苯环上的甲基使甲苯非常易于硝化苯环上的甲基使甲苯非常易于硝化。

Some new lignans of dibenzocycloheptadiene and benzofuran analogues were first synthesized successfully by intramolecular nonphenolic oxidative coupling and rearrangement of the 1,4-biaryl-2,3-dimethyl-2,3epoxide substituted butanes with DDQ in TFA.

以DDQ为非酚氧化偶合试剂与1，4-二芳基-2，3-环氧类化合物进行分子内的非酚氧化偶合反应，首次合成了二苯骈环庚二烯类和苯骈呋喃类的新型木脂素，其结构由不同光谱和X-单晶衍射所确证。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。