查询词典 D.O.A.

A: If you put on C.O.D., we'll have to go elsewhere.

如果你要C.O.D。的话，我们只有找别家公司。

I still hav e n't giv en up my re s o l u tion t o d o more re a ding.

我仍然有不放弃我的决心到做更多阅读。

A novel carbonyl transposition led by anilines'nucleophilic addition to methyl 2-keto α-D-glucopyranoside was discovered. And the mechanism of the reaction concerned to an enol rearrangment was provided through tracing the change of 〓H-NMR and 〓C-NMR of a hemiacetal intermediate which was obtained in the reaction of o-phenylene diamine with 2-keto glycoside. Both the intermediate and the converting product were identified by 〓H-NMR,〓C-NMR,〓H-〓H COSY and HMQC.

一、发现了2-位氧化α-甲基D-葡萄糖苷的芳胺亲核加成引起羰基转位的新方法，利用核磁共振氢谱及碳谱对邻苯二胺与2-位氧化α-甲基D-葡萄糖苷加成生成的稳定中间体半缩酮化合物在氘代丙酮中的变化进行跟踪，结合对转化产物的氢氢相关谱和HMQC结构确证，提出了该反应中2-位羰基通过烯醇化互变而转至3-位的机理并得到了验证。

In the fifth chapter, a series of betulin derivatives including 28-acetoxybetulin, 28-tritylbetulin, 28-benzoylbetulin, 3-O-β-D-glucopyranoside of betulin and some betulinic acid conjugate containing amino acid were synthesized and confirmed by MS and NMR.

第五章分别合成得到了乙酰化白桦酯醇、28-苯甲酰化白桦酯醇、28-三苯甲基化白桦酯醇、3-O-β-D-glucopyranoside of betulin和一系列的白桦酯酸苷氨酸的衍生物，并分别对其进行了结构鉴定。

This paper discusses a discrete stochastic Lotka-Volterra competition systemwhere ε_1,κ are i.i.d N(O,1),ε_2,κ are i.i.d N(0,1), p is is revelant coefficient of ε_1,κ and ε_2,κ. Maximum Likelihood Estimation of parameters and asymptotic characteristic of the system are studied.

本论文主要讨论离散随机Lotka-Volterra竞争系统其中ε_1，κ是i.i.d N(0，1，ε_2，κ也是i.i.d N(0，1)，ρ是ε_1，κ与ε_2，κ的相关系数参数的极大似然估计及估计模拟和系统的渐近性。

In the context of a traffic flow system based on an O-D network, the variation of nonlinear dynamical behaviors and complexity of motion under the variation of uncongested traffic cost and capacity of the roads are discussed through bifurcation diagram and phase plot.

以交通流O-D网络系统为背景，通过分岔图和相图讨论了在无交通阻塞下的交通费用和交通容量变化下系统非线性动力学行为的变化和运动复杂性。

The agglutination for rabbit was the highest among erythrocytes of human, rabbit, common carp and crucian carp. The hemagglutinating activity for rabbit could not be inhibited by D-fructose, D-mannose, D-galactose, glucose, sucrose, manrmn, gamma-globulin and egg albumin, but inhibited by bovine-thyroglobulin, and the minimum inhibitory concentration was 3.10 mg/ml.

该凝集素可以凝集人的A、B、AB、O型红细胞，且凝集活性相同，在对人、兔、鲤、鲫的红细胞的凝集作用中，对兔红细胞的凝集作用最强，且不被己测试的D-半乳糖、D-果糖、D-甘露糖、葡萄糖、蔗糖、甘露聚糖、γ-球蛋白、卵清蛋白所抑制，仅被牛甲状腺球蛋白抑制，最小抑制质量浪度为3.10mg/ml。

In addition, there are a large number of strong hydrogenbondings(N-H…O,O-H…O) and weak hydrogen bondings in involving the cations,perchlorate counter-ions,PNOS and water molecules, which result in formation 3-D networkstructure.

晶体中Ni与配体希夫碱中的N 、N(吡吡啶醛类过渡金属希夫碱配合物的合成、晶体结构及谱学表征啶)、O原子配位形成变形的八面体构型，由于分子间，存在大量的强氢键和弱氢键，这些氢键的交互作用使得该配合物形成二维网状结构。

Tz = 2Gk q 即 z = 2Gk q /T 40 Suppose the volume between membrane and the boundary plane is V, and we notice that 2 ∫∫ d x d y = M Then we have Thereby we have q qM V =∫∫ zdxdy =∫∫ dxdy = 2GTk 4GTk M 2 Gk = 2V q /T From τ zx =τ xz =, y z 2Gk τ zx /= y q / T τ z y =τ yz = x 41 Moreover, we get 设薄膜及其边界平面之间的体积为V,并注意到 2 ∫∫ d x d y = M 则有从而有由又可得 q qM V =∫∫ zdxdy =∫∫ dxdy = 2GTk 4GTk M 2 Gk = 2V q /T τ zx =τ xz =, y z 2Gk τ zx /= y q / T τ z y =τ yz = x 42 Adjust the pressure q of which the membrane is under, and make the rights of formulas,, equal to one, then we can gain some conclusions as follows:(1) The stress function of wringed pole equals to the uprightness angle of the membrane (2) The torsion M which wringed pole received equals to two times of the volume between the membrane and the boundary plane.

o b y a x 43 调整薄膜所受的压力q，使得，，三式等号的右边为1，则可得出如下结论：(1)扭杆的应力函数等于薄膜的垂度z。(2)扭杆所受的扭矩M等于该薄膜及其边界平面之间的体积的两倍。

The valve outlet has a thread size of 0.825 inch O.D.

阀门排气口的螺距为0.825英寸O.D。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。