1.
The bonding electrons are π electrons, which is at variance with the notion that single bonds are always σ bonds.
成键电子是π电子，这与单键总是σ键的看法不一致。
2.
The Study of Key Techniques for High Resolution and Wide Bandwidth Σ-Δ Modulator;
高精度宽带Σ-Δ调制器关键技术研究
3.
Design of Key Blocks of Sigma-Delta Fractional-N Synthesizer;
Σ-Δ小数频率合成器中关键模块的设计
4.
o-amino-r-ketovaleric aeid
σ-氨基- r-酮戊酸
5.
aminolevullnate dehydratase
σ-氨基乙酰丙酸脱水酶
6.
aminolevulinate synthetase
σ-氨基- r-酮戊酸合成酶
7.
The carrying capacity of bracket is not lower than20 KN and matching with kinds of raised floor.
⒅Ъ艹性啬芰Σ坏陀
8.
This paper introduces theσ_ automorphism for finite dimensional commutative associative algebras and studies the structure ofσ_ semisimple algebras andσ_ nilpotent algebras.
通过引入有限维交换结合代数的σ自同态映射，研究了σ半单代数和σ幂零代数的结构。
9.
Studies the differential geometric properties of the cylindroidΣ, gives the firstand second fundamental forms and the asymptotic curves ofΣ and then proves thatΣ isnot developable.
研究了柱形面Σ微分几何性质，给出它的第ⅠⅡ本形式，得到Σ的渐近线，并证明Σ不可展直纹面。
10.
Low-pass and band-pass sigma delta modulator are analyzed.
在讨论低通Σ-Δ调制器的基础上,进一步讨论了带通Σ-Δ调制器;
11.
There shall no evil befall thee, neither shall any plague come nigh thy dwelling.
龌急夭涣俚侥悖?趾σ膊话そ?愕恼逝铩
12.
This Protocol shall be registered in accordance with the provisions of Article102 of the Charter of the United Nations.
?疽槎ㄊ橛σ勒铡读?瞎?苷隆返
13.
Next management measures the current sigma performance of each of these processes.
接着，管理人士测量每个过程当前σ效。
14.
THE PHASE TRANSITION IN CHIRAL SYMMETRIC σ MODEL AT FINITE TEMPERATURE
有限温度下手征对称σ模型中的相变
15.
Vextex Corrections and one σ Exchange Potential at Finite Temperature
顶角修正和有限温度下的单σ交换势
16.
Effect of σ～* and ф Mesons on Neutron Star Matter;
σ～*和Ф介子对中子星物质的影响
17.
The σ-decomposition of Fuzzy Relations and the Strongly Transitive Fuzzy Matrices;
可σ分解的Fuzzy关系及强传递Fuzzy矩阵
18.
On σ-weakly Hereditarily Closure-preserved Family and CC_ω-spaces;
关于σ-弱遗传闭包保持集族和CC_ω空间