查询词典 hf

A model of cascade and overlay was established to explain the coacervation of the colloidal granules.

并对不同掺F量的多孔氧化硅薄膜的Ⅰ-Ⅴ特性和隙态密度进行了分析，发现少量HF的加入会优化薄膜的性质，而多余HF的加入会使得薄膜性质变差。

The rope-jumping and the diabolo exercise training were able to obviously increase the activeness of parasympathetic nerve system of the elementary school students.

二、扯铃实验组女学童的SDNN、RMSSD和TP在训练第8周与训练后，达统计上显著水准(p＜。05)，而LF%、HF%和LF/HF均未达统计上显著水准(p＞。05)。

The aim of the paper is to improve the reliability of HF generator, which is the key to decide the life of HF electrodeless light.

在本文中我以提高高频无极灯用高频发生器的可靠性为目标。

The aim of the paper is to improve the reliability of HF generator, which is the key to decide the life of HF electrodeless light. At first, I collect and analyze the relative dates, and statistics fault models.

首先进行了与可靠性相关的数据收集与分析，对故障模式进行统计；然后从电路结构、环境应力及容差三个方面进行可靠性分析，从而为关键的可靠性设计提供了依据；接下来的可靠性设计，从电路设计、热设计、降额使用、筛选四个方面逐一解决了可靠性分析阶段发现的问题；最后，我将改良的发生器批量生产，并从中重新收集了可靠性数据进行计算，事实证明改良后高频无极灯的平均寿命已达到6万小时。

The results show that the hydrofluoric acid is a effective catalyst for the gel formation.

以正硅酸乙酯为硅源，分别以HF和HF/氨水为催化剂，通过溶胶-凝胶法常压制备SiO2气凝胶。

The amphoteric character of Al2O3/SiO2 can scavenge acidic hydrogen fluoride,which is inevitably present in the LiPF6-based electrolytes us...

膜中Al2O3/SiO2的两性特征，将电解液中的酸性HF消耗掉，而HF作为现在锂离子电池所用电解液中的杂质是不可避免的。

The evaluation results under 16 different treatments showed that low fertilization treatment, medium fertilization treatment, high fertilization treatment under RW condition, MW with HF, and NW with HF, the growth condition of crop belonged to suitable; the other 11 treatments belonged to moderate or inaptitude.

对试验中16种不同水肥组合处理的评价结论为：丰水下施低、中、高肥，平水高肥和自然降水高肥等5种处理下属适宜；其余11种处理下属中等或不适宜。

In Group P, epinephrine and norepinephrine increased in all patients during peritoneal insufflation and tumor resection.

group p 中所有病人在腹膜充气和肿瘤切除时肾上腺素和去甲肾上腺素水平均升高。16个病人同时伴有收缩压、心率、低频和 LF/HF 比值的升高。3个病人的低频和 LF/HF 比值降低。

In the investigation of Cu-Zn-Al SMA, the influence of quenching speed, shape memory thermal treatment on SME, microstructure and morphologies was discussed. The changes in morphology and interfaces were in situ metallographic observed during thermal cyclings in order to control the degradation of two way shape memory effect . The stabilization of stress induced martensite variants method and the accordingly changes in microstructure were studied in detail. The mechanism was also compared between SSIM and TWME training method. From the above in situ observation results, the interface structure and especially the twin related A: B type variant pair were examined by HREM to clarify the role of movability of interfaces and the changes in variants orientation in inducing the degradation of the TWME. During developing the Ni-Ti-Hf SMA melt spinning ribbon, it was found the morphology and structure embodied the SME and was directly effected by chemical composition and technique factors, such as the different content of Hf, the speed of copper roller rotation and etc. Therefore, the morphology and structure were extensively examined.

在对Cu-Zn-Al形状记忆合金研究中，研究了提高记忆效应的热处理淬火速度、记忆热处理方式对Cu-Zn-Al形状记忆合金组织结构的影响；为了弄清双程记忆效应衰减的原因，原位动态观察了热循环过程中，合金组织形貌及界面的变化；因形状记忆合金必须经记忆训练才能具有双程记忆效应，系统地研究了应力诱发马氏体稳定化训练方法和这种方法引起的双程记忆合金组织结构的变化，比较了它与双程记忆效应训练方法诱发TWME机制的异同；因在原位动态观察中发现界面可动性及两侧变体取向的变化，伴随着记忆效应的衰减，用HREM详细研究了变体的界面结构，特别是A：B型变体界面结构及变体内部结构。

The MMP-1 expression was increased in the myocardium of systolic HF patients compared with diastolic HF patients and normotensive subjects.

这个MMP-1表达增加了心肌收缩性心力衰竭患者的左室舒张相比心力衰竭患者的正常血压和主题。

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！