查询词典 HF

A glass die, a micro replication characteristic of PDMS and an electroplating technology are used to make the three-dimensional microelectrode array. A precise cutting machine is used to cut the glass to form a column array and a mixture of HF and NH4F is used to produce the corresponding structure serving as the die of the micro replication of PDMS. The photoetching technology is left out and the limitation of a photoresist on the dimension of the three-dimensional structure is eliminated; therefore the longer microelectrode array can be made. The length of the microelectrode array depends on the incision depth of the glass and the electroplating technology of deep hole of the metal.

本发明利用玻璃模具、PDMS的微复制特性和电镀技术制作三维微电极阵列，用精密切割机切割玻璃形成柱状阵列，用HF和NH 4 F的混合液腐蚀出相应的结构作为PDMS微复制的模具，免去了光刻工艺，消除了光刻胶对三维结构尺寸的限制，可以制作更大长度的微电极阵列，这一长度决定于玻璃的切割深度和金属的深孔电镀技术。

In order to illustrate this point, the atomic charge for the oxygen atom in water (HF/STO-3G structure) has been calculated

为了解释这一点，用Mulliken和CHELPG方案在几个不同的理论水平上对水分子（HF/STO-3G结构）中的氧原子的原子电荷进行了计算。

In the collision energy range from 0.01 eV to 0.5 eV ,the reaction probability, the influence of rotational excitation of the reagent HBr on probability, the integral cross section and the rotational of the product HF are calculated.

在碰撞能为0.01~0.5 eV的范围内，计算了反应几率、反应物HBr分子的转动激发对反应几率的影响、积分散射截面和产物HF分子的角度分布。

The effect of frequency and length of square pulse,as well as eletroporation time on hFⅨ expression were investigated.

表达质粒G1NaMCⅨ肌肉转移和表达，并观察了方波频率、宽度、电击持续时间对hF。

Using quantum chemistry ab initio HF and semiempirical ZINDO-SOS methods, electronic spectrum and third-order nonlinear optical coefficients of pyrazine and its derivatives were systematically investigated.

采用量子化学ab initio HF和半经验ZIND-SOS方法计算了吡嗪及其衍生物的电子光谱和三阶非线性光学系数。

The excited-state intramolecular proton transfer tautomerism reaction of 6-methyl-4-hydroxy pyri-midine monomers and dimmers was investigated by the ab initio method with the self-consistent reaction field with Tomas's polarized continuum mode and CIS theories at HF level on the basis of 6-311+G* and 6-31G basis set. By studying the potential energy surface, it was found that the monomer's ground-state proton transfer process together with the excited-state proton transfer process is a molecular system of four energy level, but dimmers were not, which can be used to explain the fact that UV-visible absorption and fluorescence spectra of monomer and dimers all corresponded to quinoid.

采用 ab initio HF理论的组态相关CIS方法和连续溶剂模型PCM，分别在6-311+G*和6-31G水平上研究了6-甲基-4-羟基嘧啶单体及二聚体激发态质子转移的异构化反应；对其反应势能面的研究发现，单体基态和激发态的异构化反应一起可以形成四能级的分子电子体系，而二聚体的却不能，由此解释了单体和二聚体的紫外吸收光谱和荧光发射光谱均对应于酮式构型的原因。

RESULTS: Compared with control group, SDNN, SDANN, TP, VLF and scattergram length in organic heart disease group were significantlylow. Results of Lorenz plot showed that most of controls were comet shape (82.22%) as well as organic heart disease patients were complex shape (42.22%), triangularshape (35.56%) and torpedo shape (8.89%). L correlated well with SDNN, SDANN, TP and VLF. Scattergram dispersion correlated well with rMSSD, PNN50 and HF.

结果：与对照组比较，器质性心脏病组的SDNN、SDANN、TP、VLF及Lorenz散点图长度均显著下降，对照组散点图82.22%为彗星状，器质性心脏病组复杂形、扇状及鱼雷状分别占42.22%、35.56%及8.89%； L与SDNN、SDANN、TP、VLF呈显著的正相关，散点图离散度与rMSSD、PNN50、HF呈显著的正相关。

A perpendicular magnetic recording disk has an improved recording layer of a granular CoPtCr-based ferromagnetic alloy with inter-granular material made up of one or more oxides of Cr and one or more oxides of one or more of a segregant of Si, Ta, Ti, B, Nb or Hf, wherein the amount of oxygen present in the recording layer is greater than about 22 atomic percent and less than about 35 atomic percent.

本发明提供一种垂直磁记录盘，其具有改进的具有颗粒间材料的颗粒CoPtCr基铁磁合金的记录层，颗粒间材料由Cr的一种或更多氧化物及Si、Ta、Ti、B、Nb或Hf分离子中的一种或更多种的一种或更多种氧化物构成，其中记录层中出现的氧的量大于约22个原子百分比并且小于约35个原子百分比。

The electron correlation in heavy metal tellurium clusters is studied at the level of HF and CCSD.

在HF和CCSD水平上研究了重金属碲化物团簇M2Te的电子相关作用。

The HF Trigger input passes through an internal prescaler before being applied to the trigger circuitry.

HF Trigger在应用到触发电路之前要经过内部的预定标器，这种输入方式拥有非常高的带宽，高达10GHz，但是不具备Direct Trigger方式的调节功能

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！