查询词典 hf

Study on rearrangement of semipinacone and cycloheptane cation with ab initio method;2. Mechanism of rearrangement of semipinacone and cycloheptane cation were studied with HF method and STO-3G~* basis set.

用哈特里-福克方法、STO-3G*基组，分别对半片呐醇和环庚烷正离子的重排机理进行了从头算研究，计算了半片呐醇和环庚烷正离子重排过程中的各个状态的几何构型、零点能，同时对反应路径进行了计算。

The chemical activating mechanism of UA is that CG can stimulate pozzolanicity more effective than gypsum because of higher solubility and looser crystal structure; but CG has poor property on retardation setting, and this shortage can be solved by mixing with gypsum; CS can offer alkali activity, which can depolymerize silica and aluminum glass, and benefit for other activity methods and overcome the disadvantage of HF on setting time; Sodium sulfate improves early strength greatly but loses the final strength. NF can improve both early and final strengths.

联合激发技术的化学激发机理是，煅烧石膏溶解度高及晶体结构松弛，比天然石膏的活性激发效率高，但降低石膏的缓凝作用，与天然石膏混合既可提高活性又能保持缓凝作用；干法电石渣提供碱激发，促进高钙灰中硅、铝玻璃体解聚，并克服高钙灰对凝结时间的不利影响；硫酸钠虽然早强作用明显，但使后期强度倒缩，NF使各龄期活性都得到提高；磨细的物理激发使高钙灰大颗粒中的CaO和富集碳组分被磨细、分散，活性增加而危害性降低。

A program written in C language of personal computer was used to control the performance of electroosmotic pump and three-way solenoid valves in the HF-LLLME system.

利用C语言程序实现对电渗泵驱动和电磁三通阀切换的控制，并将整个LLLME过程采用计算机自动控制。

A clear cause-and-effect relationship between excessive myocardial MMP-1 activity, increased mysial collagen degradation, and progression to systolic HF has been shown experimentally through the use of transgenic models and the use of pharmacological MMP activators.53,54 In addition, experimental evidence has been provided showing that following chronic neurohormonal activation, increased synthesis and release of MMPs into the local extracellular matrix of the cardiomyocyte occurs,55 which in turn could contribute to endomysial and perimysial collagen degradation and disruption.

一个明显的因果过多的心肌MMP-1关系活动， mysial增加胶原蛋白的降解和进展收缩性心力衰竭已被证明试验，通过使用转基因模型和使用的MMP药理作用此外，activators.53，54实验证据下面被提供显示慢性神经激活时，增加的MMPs合成和释放到当地的细胞外基质的心肌细胞发生，55反过来有助于人肌内膜和 perimysial胶原退化和破坏。

Molecular sieve and solid acid of SO~(2-)_4/ZrO_2, ionic liquids, and rare earth perfluoro alkyl sulfosalts to formylate alkylbenzene by carbon monoxide to synthesize alkylbenzaldehyde was introduced.

介绍HCl-AlCl3、HF-BF3和CF3SO3H-SbF5等B-L复合酸，分子筛和固体酸，离子液体以及稀土全氟烷基磺酸盐作催化剂在烷基苯用CO甲酰化合成相应烷基苯甲醛工艺中的应用进展。

Anxin granula has the effect of resisting cardiocyte apoptosis and can be used to prevent and treat HF.

安心颗粒有抑制心肌细胞凋亡的作用，可用于心力衰竭的防治。

It was also indicated by the temperature calculation that the lithspheric mantle is stratigraphically layered with the lower part composed by fertile lherzolite and the upper part by refractory harzburgite and clinopyroxene-poor lherzolite.

Sr-Nd-Hf同位素资料反映这些地幔包体均表现为亏损性质，而Re-Os同位素资料确定上述岩石圈地幔形成于中元古代，明显老于上覆地壳的新元古宙时代，反映壳幔年龄上的解耦。

But, according to Kiri they now know what HF is about.

但据kiri他们现在知道巨星是什么。

Hepatic fibrosis is the common pathologic process of varied chronic liver diseases, and it is also a "transfer station" for many chronic liver diseases lapsing to cirrhosis.

肝纤维化(hepatic fibrosis， HF)是诸多慢性肝病共同的病理过程，也是各种慢性肝病向肝硬化转归的中转站。

It is presented in this paper that an analysis is done on maloperation of WXB-11 microprocessor based HF protection at transitional fault in Heilongjiang 220kV network in recent years.

文章对黑龙江省220kV电网近几年WXB-11型微机高频保护在系统发生转换性故障时发生误动进行了分析，说明了误动的原因，并提出了解决的方法。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！