查询词典 C.H.

With the characterization of NMR and IR, combining with the synthesis of active species and studies of their structures, it is suggested that the hydride [RuHCl(PPh3)3], being favorably formed in the acid media, exhibited higher activity in the reduction of the C=C bond, while the hydride [RuH4(PPh3)3], being preponderantly formed in the basic media, showed activity and higher selectivity towards the C=O reduction.

通过核磁、红外等表征手段，并结合可能催化活性配合物的合成和结构研究，推测了在非水介质中对C=C和C=O双键起到活化作用的催化剂活性物种和可能的选择加氢反应机理，即，催化剂[RuCl2(PPh3)3]在酸性环境下倾向于生成[RuHCl(PPh3)3]物种，该Ru-H物种对C=C双键加氢反应表现出较高的活性；而碱性环境下则易于生成[RuH4(PPh3)3]物种，该Ru-H物种对C=O双键加氢具有较高的催化活性。

Methods:61 acute pancreatitis patients within 24 h after the occurrences of syndrome were enrolled and 21 patients of other reasons were studied as controls. Urinary trypsinogen activation peptide,serum procalcitonin,amylase and C-reaction protein were determined immediately 24 h,48 h and 72 h.

选取出现症状24 h内入院的急性胰腺炎患者68例及对照组患者21例，留取入院时、24 h、48 h及72 h 尿样和血样，测定尿胰蛋白酶原激活肽（trypsinogen activation peptides，TAP）和血清降钙素原（procalcitonin， PCT）、淀粉酶和C反应蛋白，入院后72 h按照病变程度分为重症组和轻症组。

Synthesized three new dithiocarbohydrazones: 1, 5-bis (4-methoxybenzaldehyde) dithiocarbohydrazone (1), 1, 5-bis (p-dimethyl aminobenzaldehyde) dithiocarbohydrazone (2), 1, 5-bis (2-furaldehyde) dithiocarbohydrazone (3), and initially reported the 〓C NMR data of the dithiocarbohydrazones.

合成了3—（谷氨酮—1—基）—4—氨基—5—巯基—1，2，4—均三唑新的中间体化合物，以元素分析，IR，NMR，MS实验技术对其结构进行了表征，研究其NMR波谱特征，并以〓H-〓H COSY，〓C-〓H COSY，COLOC二维NMR技术对其〓H，〓C NMR的谱峰进行了全归属。

Compared with theoretical values 49.0%C,7.8%H,17.1%N the elemental analysis results of YXA2.3 that was 45.1%C,4.7%H and 11.1%N showed that oxycellulose chloride were aminated only partially in about 45%yield because of their huge molecular volume.

对YXA2.3进行有机元素分析结果为：C 45.1，H 4.7，N 11.1(理论值为：C 49.0，H 7.8，N 17.1)，其中11.1＜17.1，4.7＜7.8，这是由于大分子的特性，氧化纤维素的氯化物只部分发生的胺化。

The following results have been obtained: 1 Expression of SbNHX1 in E. coli enhanced Na+ and K+ tolerances, but not to others; 2 The sequence from 1353-1514bp in SbNHX1 gene played a role for SbNHX1 to Na+ and K+ tolerances; 3 The Na+/H+ antiporter of Salicornia Bigelovii Torr. catalysed Na+/H+ or K+/H+ exchange with equal affinity, which indicates that the SbNHX1 is more likely to locate on member of vacuolar, and responds to transport Na+ into the vacuole from cytoplasm.

证明了SbNHX1能抵抗Na+和K+的胁迫，但对其它盐离子没有抗性；2）证明了北美海蓬子Na+/H+逆向转运蛋白基因（SbNHX1）C末端从基因的C末端1353bp至1514bp的序列在耐盐中起一定的作用；3）证明了北美海蓬子Na+/H+逆向转运蛋白（SbNHX1）对Na+和K+交换的等亲和性，对于这一点，说明北美海蓬子Na+/H+逆向转运蛋白与定位于液泡膜上的Na+/H+逆向转运蛋白的功能相似。

Nevertheless, it is seen from the figure that the H concentration within the a-Si:H film does not significantly decrease for anneals up to 450°C, indicating the possibility of a partial release of H from the SiNx:H towards the substrate.

不过，它是从数字的H浓度在A - Si ： H薄膜并不显着降低，为anneals可达450 ° C时，说明有可能在局部释放的H从氮化硅： H的对衬底。

At even higher temperature anneals, breakage of Si-H bonds and out-effusion of H through the SiNx:H layer may cause a collapse in the surface passivation at temperatures around 600°C, as seen from the apparently complete lack of H below the SiNx:H layer in the NRA measurements of these samples.

在更高的温度anneals ，破损泗H键及外积液的H透过氮化硅： H的层都可能引起崩溃，在表面钝化，在温度约为600 ° C时，从表面上完全缺乏的H低于氮化硅： H的层在NRA的测量这些样品。

When t=1/2, Path of the C-curves and H-curves ofdegree two and three are lines, but not for the Path of degree four, weneed more about the control polygon. Paths are commonly curves. Butthe reference [38] pointed out that they can closely be approximated bylines. By this method we can get a C-curve passing a given point easily.

一般情况下，C曲线族的Path也是曲线，文献[38]以三次C曲线为例，提出用直线进行近似，应用这一方法，我们可以简洁的求出过一定点的C曲线，只要给定的点在C曲线族的范围内，则可以首先求出过这一点的C曲线族的Path，然后可以确定过这一点的C曲线的形状参数α，以及曲线参数t.H曲线的情况与C曲线类似。

The simple algebraic procedure is used to form nearly orthogonal 2—D C—type and H—type bodyfitted grids for bodies of revolution, which is then used to generate 3—D C—O and H—O bodyfitted grids for fuselages.

五、用简单的代数方法生成了近于正交的旋成体子午面&C&型及&H&型贴体坐标网格，并以此为基础构造了三维任意截面机身的&C-O&型及&H-O&型贴体坐标网格。

But in the systems of HO-C≡P and NH2-C≡P, H-P=C=O and N≡C-PH2 containing C≡N triple bond are thermodynamically the most stable species, respectively.

而在HO-C≡P和NH2-C≡P体系中，热力学最稳定的结构却是H-P=C=O和含C≡N三键的N≡C-PH2。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。