查询词典 A.B.

Using the main result, we also obtain a simple criterion to check if a given C(superscript *)-algebra A is Abelian, that is, A is Abelian if and only for any two positive elements a, b∈A, there is a'∈A such that ab=ba'.

利用文中的主要结论，还得到了判断C-代数A是交换一个简单条件，即A是交换的当且仅当对A中的任何两个正元a，b存在a'∈A使得ab=ba'。

Nine kinds of pigments were identified in Ulothrix sp.. They are carotinoid, pheophytin, chlorophyll a, b, chlorophyllin chlorophyllide a,neoxanthin, chlorophyll c and pheophytin c.

丝藻的色素种类有 9种，分别为胡萝卜素、脱镁叶绿素 a、叶绿素 a、叶绿素 b、叶绿酸、脱酯基叶绿酸、新黄素、叶绿素 c和脱镁叶绿素 c。

Now I am proud to say that I am a very stron A, maybe evan a B cup after taking the product for 1 month.

现在我非常自豪地告诉大家，在服用仅仅一个月的时间之后，我已经从A罩杯升到B罩杯，甚至更多。

Pitch is a combination number of a one-to-two ratio indicating the spline proporti******; the upper or first number is the diametral pitch, the lower or second number is the stub pitch and denotes, as that fractional part of an inch, the basic radial length of engagement, both above and below the pitch circle.

径节分数：径节分数是由两个数组成的一个比率，它表示的是花键的比例；设这个比率为A/B，则在这个分数中第一个数A表示的是花键的径节，第二个数B表示的是残余径节，径节表示的是在节圆上方的键齿在半径方向上的结合长度，残余径节表示的是在节圆下方的键齿在半径方向上的结合长度。

If the graph of the function is a consecutive curve at the interval ［ a , b ］ together with , the function has a zero point at the interval. That is, exists and it results in . Therefore, the x o is the root of the equation

结论〗：如果函数在区间［ a ， b ］的图象是连续不断的一条曲线，并且有，那么，函数在区间内有零点，即存在，使得，这个 x o 也就是方程的根。

The four most common phenotypes are A,B,AB,and O,referring to the type of antigen is presentor absenton the surface of a client's red blood cells,Routine testing usually involves only the Rh antigen.if an Rh-negative clinet receives Rh-positive blood,he or she will develop Rh antibodies,and future Rh-positive transfusions may cause a transfusion reaction .in pregnancy,antibodies from an Rh-negative mother may hemolyze fetal(erythroblastosis fetalis,or hemolytic disease of the newborn).

四种最普遍的表现型是A、B、AB、阿，这类型的抗原或表面上的一个客户的红血球、常规测试通常涉及到只有Rhantigen.if准备一Rh-positive接受血液，跟他或她将发展Rh抗体和未来的Rh-positive输血可能引起输血反应，在怀孕期间的母亲可能会产生抗体hemolyze北京(erythroblastosis fetalis或胎儿的新生儿疾病溶血试验确定具体)。

Let G be semisimple matrix group with Lie algebra g, T a fixed maximal abelian subalgebra of g, T the orthogonal complement of T with respect to the Killing form of g, and a, b 6 T a fixed regular elements.

设G为半单矩阵群，g为其Lie代数，T(来源：ABC论文91网www.abclunwen.com)为g的极大交换子代数，T~⊥为T关于g的Killing型的正交补，a，b∈T为固定正则元。

The crystal structures have been determined by X-ray diffraction method, which show that the new complex [Co2-Co(2)(0H2)s] belongs to the bridging binuclear complex and the system of monoclinic with space group P211~,unit cell parameters a8.3850(10)A, b=27.386(4) A, c=9.610(2) A,~=98.280(10)~,V=2 183.8(6) A3 , Z=4, Dc=l.746Mg/m3,~i =l.597mm, F(000)=1168, Final R=O.0253 and wR=O.0610 S1.009 ,The two Co2~ are in distorted octahedrons. The part of [2Co] possess an approximate D2d symmetry, while the part of [OCo(2)(0H2)5] has an approximate C2 symmetry.

结构分析表明配合物(1)[Co1，(DPC2-Co(2)(OH2)5]是一个未见报导的桥联双核配合物，属单斜晶系，空间群为P2_1／c，晶胞参数：a=8.3850(10)A，b=27.386(4)A，c=9.610(2)A，β=98.280(10)A，V=2183.8(6)A~3，Dc=1.746Mg／m3，Z=4，μ=1.597mm-1，F(000)=1168，结构偏离因子R=0.0253和ωR=0.0610，吻合因子S=1.009，Co_(1)和Co_(2)的配位多面体皆为扭曲正八面体，[_2Co_(1)]部分具有近似D_(2d)对称性，[OCo(2)(OH_2)5]部分具有近似C_2对称性。

A" B" and "C" are secondary spacings to be put on the test sample in the event the minimum spacing fails.

& &B&和&C&是第二选择的间距，在最小间距失败的情况下，就将&B&和&C 间距进行试验。

Getting a grade like a B-plus or a C-minus adds or subtracts a few tenths of a point. An F is a failing grade worth zero toward a student's grade point average.

得到一个类似B+或者C-的等级会加上或减去几个0.1分。F是相对学生平均等级分来说未过关的等级，相当0分。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。