yf

A Study on the Form Factor YF of Gear Tooth

关于齿形系数YF的探讨

Product and Marketing Strategy Administration of YF Limited Corporation

YF公司产品市场战略管理

System Design of Tripropellant Liquid Rocket Engine Based on YF - 75 Rocket Engine

以YF-75发动机为平台的三组元液体火箭发动机系统设计

Research on New Core Binder YF

芯砂用新型YF粘结剂的研究

Conclusion : YF is better than hormone for relapse of Graves disease .

结论：眼突方治疗Graves眼病激素治疗后复发的疗效比继续用激素的疗效为好。

To study teratogenic effects of YF 1 germicide in mice .

[目的]探讨YF1杀菌剂对小鼠的致畸作用。

FORTRAN / YF System for YH-F2 Simulation Computer

用于YH－F2仿真机的FORTRAN／YF系统

The Enhancement of Uptake and Utilization of GA 3 in Rice Seedlings by Surfactant YF 3

粤辅3号提高水稻幼苗对赤霉素的吸收和利用

It was also found that different YF extracts could inhibit the proliferation of rat HSC cultured in vitro on different modes .

该方药不同提取物以不同的模式抑制体外培养的大鼠HSC增殖。

The molecular effect [ R ( Yf ) ] in the forward electron emission decreases with target thickness at a certain energy .

前向发射产额的分子效应R（Yf），在给定的能量下随靶厚增加而下降。

Development of YF High-effect Water Reducer

YF混凝土高效减水剂研制

And tells the principle , capability , application and technical feature of TDW · YF & clasp-stop .

并介绍了TDW·YF&型液压防溜器的原理、性能、应用及技术特点。

Therefore , for the HR recovery time , Group YF is significantly shorter in Group F ( P0.001 ) During the whole recovery process after exercise .

整个运动后恢复过程HR恢复时间YF组显著短于F组（P0.001）。

In order to discover the problems of English teaching of lower grades in primary school and analyze the causes , the study is made on the basis of YF primary school .

本文以YF小学为个案进行研究，分析YF小学低段英语教学中存在的问题，并探究原因。

This paper presents a brief description of these engines . The design features and flight results of YF 73 and YF 75 hydrogen oxygen engines are summarized .

文中对发动机的一些研制情况作了回顾，对YF－73和YF－75氢氧发动机的设计特点、飞行结果作了简单叙述。

YF oil field , belong to the eastern end of middle southern fault terrace of Qintong depression , Dongtai depression , Subei Basin structure .

YF油田构造上属于苏北盆地东台拗陷溱潼凹陷南部断阶带中段的东端。

This paper mainly studies the basic properties of high quality YF lime stone as we11 as the calcination conditions of the active lime and the microstructure of lime .

本文主要研究YF优质石灰石基本性能及其活性石灰的煅烧条件和方钙石的显微结构。

The samples were sent for laboratory analysis at the Institut Pasteur , Dakar and confirmed by YF seroneutralization , a highly specific test for yellow fever .

样本送往达喀尔市巴斯德研究所进行实验室分析，并通过YF血清中和试验（一项高针对性黄热病检测方法）予以证实。

Boron based ternary ceramic YF 1 with a hardness in range of 82 90 HRA was fabricated on the steel A3 surface by sintering under the temperature of 1200 ~ 1300 ℃ .

用反应烧结法在A3钢表面制备了三元硼化物基硬质覆层材料YF1，其硬度可达82～90HRA。

The weight of pregnant mice and the weight and length of fetal mice of the group exposed to 500mg / m 3 of YF 1 germicide were much lower than those in the negative control group .

[结果]YF1杀菌剂500mg/m3组孕鼠体重及胎鼠体重、身长均明显低于阴性对照组。

In this paper , a new anti-grounding double bottom structure - YF is presented . Damage deformation , grounding forces and energy dissipation of this new structure are analyzed by the method of numerical simulation and compared with the routine structure .

本文提出了一种新式的抗搁浅YF双层底结构，利用数值仿真方法分析了该新式结构的损伤变形、搁浅力和能量耗散，并与原结构进行了比较。

The decreasing order of electron phonon couple constant is from CaF 2 , YF 3 , MgF 2 to PbF 2 , and the phonon sideband spectra are coincide with Raman scattering spectra .

结果表明电声子耦合常数g由大到小随氟化物种类的变化顺序为CaF2、YF3、MgF2、PbF2，不同样品的声子边带谱与Raman散射谱的测定结果基本一致。

The new system the at last is checked to achievement effect carries out the verification simulating valuation , and improves and perfects further , the effect forming achievement of YF electric power plant of Corp. adapting to Guangdong comparatively improves the new system examining .

最后对绩效考核新体系进行模拟评价验证，并进一步完善，形成比较适应粤电集团YF电厂的绩效改进考核的新体系。

The results of the preliminary experiments show that the virus titre of the four adaptive strains of YF 17D on Vero cells is high and stable , the titre of neutralization antibody is high , and the immunogenicity of them is excellent .

初步试验结果表明，已获得的4株黄热减毒活疫苗Vero细胞适应株病毒，其病毒滴度高且稳定，中和抗体效价高，免疫原性良好。

The Yellow Fever ( YF ) vaccine , an attenuated yellow fever 17D ( YF-17D ) live vaccine , is one of the most effective and safest vaccines in the world and is regarded as one of the best candidates for viral expression vector .

黄热疫苗是一种减毒的黄热病毒17D（YF-17D）活疫苗，是现有疫苗中最安全、最有效的疫苗之一，适于发展为疫苗载体。

It is concluded that a part of F ~ - ions in AlF_6 ~ 3-moves away from Al ~ ( 3 + ) ions after the melting of cryolite , forming xNa ~ + · yF ~ - clusters with Na ~ + ions .

结果表明：冰晶石熔化后，AIF63-中部分F-离子远离Al~（3+）离子，和Na~+离子组成xNa~+·yF-离子集团。

To obtain the adaptive strains of YF 17D vaccine virus on Vero cells , YF vaccine virus derived from chicken embryos was cultured on Vero cells and selected through plague selection , and then adapted to Vero cells . The stability of YF 17D adaptive vaccine virus was studied .

为建立黄热疫苗病毒17D株的Vero细胞适应株，将黄热疫苗病毒在Vero细胞上培养，通过蚀斑筛选，然后进行适应性传代，并进行稳定性研究。

It is also concluded that the distribution of the free space in molten cryolite is not uniform . There are more fissures and holes in xNa ~ + · yF ~ - clusters and between AlF_4 ~ - and xNa ~ + · yF ~ - clusters .

计算还表明：冰晶石熔体中自由体积的分布不均匀，xNa~+·yF-集团内部以及AlF4-和xNa~+·yF-之间缝隙较大。