椅式

催化剂具有扭曲的椅式构型，与硼烷在N原子处配位形成加合物，反应是放热的。

The catalyst is a twisted chair structure and reacts with borane at the N site of the catalyst to form catalyst borane adduct . The formation reaction is exothermic .

在氢的转移过渡态中，存在一个BNBHCO六元环，该六元环具有扭曲的椅式结构；

In the transition states of hydrogen atom from the borane moiety to the carbonyl carbon of aromatic ketone , there is a 6 membered B-N-B-H-C-O ring in a twisted chair structure .

本文报导了以分子力学方法（MM2）对1,8-萜二烯结构优化和构象分析的结果，并与环己烯的构象分析进行了比较，它们的最稳定构象均为半椅式。

This paper reported the optimization of molecular configuration and conformation analysis of limonene by molecular mechanics method ( MM2 ) . The results are compared with the test data and conformation analysis of cyclohexene .

这个幻椅式动作可以作为加强运动。

These squats from the chair can be considered as a strengthening exercise .

椅式桩墙的研究

Study on the chair-shaped retaining wall

椅式（5,5）单壁碳纳米管内硝基甲烷热解反应的理论研究

Theoretical Study on Thermal Decomposition of Nitromethane Confined Inside a Armchair ( 5,5 ) Single-wall Carbon Nanotube

根据建筑模式要求，新电梯一安装，椅式提升机将被拆掉。

Once the elevator is installed , the chairlifts will be removed , as required under building codes .

亲情俱乐部的工作人员说每层楼的楼梯井中会安装椅式提升机以帮助人们上下楼。

Officials with the Kinsmen Club said chairlifts will be installed in the stairwells on each floor to assist residents .

客运索道设计理论及其应用研究Ⅲ.单线循环吊椅式客运索道设计模型

The Design Theories and Engineering Application on the Passenger Ropeway ⅲ . The Design Model of Single line Circulating Passenger Ropeway with Chair

其中六元环分别呈现微扭曲的椅式构象、严重扭曲的椅式构象及半椅式构象；

The six-membered rings exhibit slightly distorted chair , extremely distorted chair and half-chair conformation respectively , and the five-membered ring exhibits an envelope conformation .

2和6是含有椅式结构单元的二维层状多聚物，且在2的椅式结构单元的空腔中还存在以氢键方式相连的甲醇的二聚物。

And 6 are 2-D layered polymer with chair-like units and the cavities of the chair-like units of 2 are occupied by dimers of MeOH ;

设计、合成十四种含有椅式构象六元环的咔唑衍生物和三苯胺衍生物。

And come up with the design ideas for the dissertation based on these . ( 2 ) Successfully synthesized fourteen compounds containing six-member ring structure in a chair conformation of carbazole and triphenylamine derivatives .

目前临床上指导产妇分娩的体位有多种，如平卧位、坐位、自由体位等，尚未见有专用待产椅坐式微震待产的文献报道。

Now there are many positions in clinic , such as supine position , sitting position and free position . No microseismic sitting position is reported .

野营用具，包括野营帐篷，休闲阳伞，汽车遮阳篷，野营椅，床式睡袋以及其他野营用具。

Camping articles , including camping tents , casual canopy , car canopy , camping chair , bed sleeping bag , etc camping equipment .

椅座前端瀑布式的设计，有助于减少大腿受到的压力。

Cascade design at the front end of the seat helps to reduce pressure on your legs .