ring closure

We synthesized this class of catalysts through construction of ferrocene monomer, coupling reaction, hydrolysis and ring closure, and relative configuration of catalysts were assigned by X-ray diffraction of ( S, Rp)-la.

我们通过二茂铁单体的构建、偶联、水解和关环反应高效地合成了该类催化剂，且最终产物（S，Rp）-1a通过X-ray单晶衍射确定了其相对构型。

About 2 percent of all home loans are ring for closure in foreclosure.

约2%的房屋贷款者丧失了抵押品赎回权.

The ring C is called the integral closure of A in B.

环C叫作A在B中的整闭包.

Metal cock ring soft seat surface pressure to the bearing surfaces, such as the valve core and valve seat is concentric ring surface can be a double tight closure.

金属旋塞表面压向阀座环软支座表面，如阀芯和阀座环表面是同心的，就能得到双重严密的关闭。

Study on Synthesis of Acyl Thiosemicarbazide and Its Ring Closure Products in Dry Media under Microwave Irradiation

微波辐射下干介质中酰氨基硫脲及其关环产物合成的研究

The Wedding Ring Coffin is the perfect gift for yourself or closure after a spanorce.

结婚戒指棺材是离婚后送给自己或对方最完美的告别礼物.