2) quadridentate behavior
四齿配位
1.
Lanthanide perchlorate complexes with the ligand N, N'-dimethyl-N, N'-diphenyl-3, 6-dioxaoctane diamide(L) have been prepared in non-aqueous media and they can be expressed with the general formula [Ln(L)2(H2O)n] (ClO4)3(for Ln=La, Pr, Nd, Sm, n=2; for Ln=Eu, Tb, n=1) in all the complexes, the ligand shows quadridentate behavior.
在非水介质中由轻稀土高氯酸盐与配体三甘双酰氮甲基苯胺(L)形成的6种具有稀土特征颜色的固体配合物,通式为[Ln(L)2(H2O)n](ClO4)3(Ln=La,Pr,Nd,Sm时,n=2;Ln=Eu,Tb时,n=1;不包括Pm),在这些新配合物中,配体L表现为四齿配位行为。
3) tetrahedral BO 4
四配位BO4
1.
The results showed that the tetrahedral BO 4 and the trigonal BO 3 were detected as the basic units in B 2O 3/ZrO 2 catalyst.
结果表明 ,B2 O3 在ZrO2 表面以三配位BO3 与四配位BO4结构单元存在 。
4) Four-in-one
四位一体
1.
Four-in-one courtyard ecological pattern and its benefit analysis in Northern Shaanxi.;
陕北四位一体庭院生态模式及其效益分析
2.
New four-in-one ecological model in beijing suburb;
京郊新“四位一体”生态模式
3.
"Four-in-One" Ideal Model for Ecological Civilization Construction;
生态文明建设“四位一体”的理念模式
5) four-wheel aligner
四轮定位
1.
The artide introduces the toe-in,propulsion angle,steering axle inclination and caster of four-wheel aligner and theirs influence to vehicle stability.
综述四轮定位的前束值、推进角、主销内倾角、主销后倾角等参数对汽车行驶性能的影响。
2.
Drop test for calibrating platform of four-wheel aligners is simulated by using Cosmosworks program.
通过Cosmosworks软件对四轮定位仪的检定平台进行仿真跌落测试。
3.
Calibrating apparatus for four-wheel aligners was invented;project for tracing to the source was designed.
在对四轮定位仪检测过程中主销、车轮与转角盘相对运动分析的基础上,提出了在汽车纵横两平面内主销倾角应用独立设定原则的检定方法。
6) 4-2-way
二位四通
1.
The performance,structure characteristic and operation principle of the 4-2-way solenoid directional valve were introduced.
介绍了二位四通电磁换向阀的性能、结构特点及工作原理,该阀有一个由脉冲电流控制或机(手)控制的电磁铁,具有两个稳定的工作状态,采用截止式密封。
补充资料：四位
【四位】
律宗对菩萨经三大阿僧祇劫，历五十二位，另判为四位，以统摄之，即：愿乐位、见位、修位、究竟位。兹列表说明如下：
律宗对菩萨经三大阿僧祇劫，历五十二位，另判为四位，以统摄之，即：愿乐位、见位、修位、究竟位。兹列表说明如下：
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条