查询词典 ring in

Chapter 1: The reactions of methylenecyclopropanes with phenylsulfenyl chloride or phenylselenyl chloride give cyclobutene derivatives along with ring-opened products in good total yields at 0 °C in various solvents. The reactions of methylenecyclopropanes with diphenyl diselenide give the di-phenylselenyl substituted ring-opening products which can be transformed to 2,5-dihydrofuran derivatives under the oxidation with hydrogen peroxide at room temperature.

在第一章中，我们发现亚甲基环丙烷类化合物在0℃时即可很快与苯硫氯或苯硒氯发生反应生成取代环丁烯类化合物和正常的开环产物；而与二苯基二硒的反应则需加热到150℃以上才能进行反应，生成的二苯硒基开环产物在双氧水氧化下可以转化为取代二氢呋喃类化合物。

In this case, the patient has had a ring placed in the mitral valve to repair it; the sutures appear as spots dotting the ring.

在这张图片中，病人的二尖瓣里面已经有了一个用于修复的环，环上的点就是缝合线的痕迹。

Androstenedione and dehydroepiandrosterone as a new steroid material attracts people's attention because of the shortage of diosgenin resource and successful synthesis of AD by degradation of sterols. The followings were included in this thesis: 1. 24 new oxime-ether and oxime-ester compounds from AD were synthesized by cleavage of A-ring through NaIO_4/KMnO_4 oxidation, ring closure by amination, oximation with hydroxylaminechloride in C-17 position.

甾体药物的合成原料一般为薯蓣皂素、剑麻皂素、番麻皂素等，随着薯蓣资源日渐枯竭，使得甾体药物工业不得不寻求新的原料，而微生物降解胆固醇和植物甾醇合成雄烯二酮获得成功，使得AD成为新兴的甾体原料吸引了人们的注意。

The invention discloses an elastic sectionalization ring address binding method in the network transmission technological domain, which is characterized by the following: realizing the binding of RRP ring node MAC address and IP address through ATD frame in the extended RPR protocol; without adding extra system resource consumption; converging rapidly for topology after the RPR looped network occurs switching; providing address binding information for over three layered report to transfer and utilize.

本发明涉及传输网络技术，公开了一种弹性分组环地址绑定方法，使得在不增加额外系统资源消耗的情况下实现RRP环节点MAC地址和IP地址的绑定，并且在RPR环网发生倒换后，拓扑可快速收敛。本发明中，通过扩展RPR协议中的ATD帧，在广播ATD帧的同时携带MAC地址和IP地址绑定的信息，实现所有RPR环节点的MAC地址和IP地址的绑定，该地址绑定信息可供三层以上报文转发使用。

If a switching NE detects segmentation in a ring, or additional segmentation in a ring, it squelches traffic destined for the unreachable NEs..

如果发生保护倒换的网元发现复用段保护环被分割或环再次被分割，去往被孤立网元的业务将被抑制。

Two or more of the rolling bearing in a bearing outer ring on the back of a bearing outer ring and the next in front of the relative installed.

两套或更多的滚动轴承中的一套轴承外圈的背面与下一套轴承外圈的前面相对的安装方式。

The convertible lawnmower includes a cutter housing having a discharge opening, an engine mount centrally positioned on the cutter housing, a prime mover supported on the engine mount, a mulching blade coupled to the prime mover to rotate in a blade circle within the cutter housing, a mounting ring rotatably mounted in the cutter housing, and a plate connected to the mounting ring.

该可转换的割草机包括一个带有卸料口的刀具外壳、一个中心定位在刀具外壳上的发动机架、一个安装在发动机架上的原动机、一个连接在原动机上以便在刀具外壳中的刀片圆周内围绕一轴线旋转的覆盖刀片、一个可旋转地安装在刀具外壳中的装配环和一个连接在装配环上的板。

In a recent magazine article, writer Hermione Eyre announced the "beginning of a revolution" in the diamond trade, saying: mark the creation of the Me-Ring, as brilliant and expensive as an engagement ring, only symbolising independence, not alliance.

赫尔迈厄尼·艾尔在最近的一篇文章中宣布了钻石界&革命的开始&。她说：&标志着&我的戒指这一概念的诞生。这种戒指如婚戒般璀璨名贵。它彰显着独立，而非两人的结合。

In a recent magazine article, writer Hermione Eyre announced the "beginning of a revolution" in the diamond trade, saying: mark the creation of the Me-Ring, as brilliant and expensive as an engagement ring, only symbolizing independence, not alliance.

赫尔迈厄尼縠尔在最近的一篇文章中宣布了钻石界&革命的开始&。她说：&标志着&我的戒指这一概念的诞生。这种戒指如婚戒般璀璨名贵。它彰显着独立，而非两人的结合。

The water transport efficiency in ring-porous species vessels is higher than that in diffuse-porous species and none- porous species, but ring-porous species vessels more easily occur embolism.

环孔材树种导管比散孔材导管和无孔材管胞输水效率高，但它比后两者更容易发生空穴和栓塞。

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％。