查询词典 sampling fraction

Only 2.5% of water is fresh, and only a fraction of that is accessible.

（1）人类的种种技术，都是人的体力和智慧的延伸。

Through the multiple stepwise regression analysis, the duration of the disease and serum GH level were the main influencing factors of acromegalic cardiomyopathy. 2 Ejection fraction and fractional shortening, were decreased, compared to control group, they still remained in normal range. 3 Isovolumic relaxation time and E wave descending time, were delayed apparently compared to control group, indicating the damage of cardiac relaxation. 4 Subgroup analysis in acromegalic: The comparison between patients with diabetes mellitus and impaired glucose tolerance and patients without DM/IGT showed that there was no significant difference in terms of the parameters in the two groups, in spite of an mild increase of IVST in the former group.

经多元逐步回归分析，病程和血清生长激素浓度为心肌肥厚的主要影响因素。2实验组射血分数和左心室短轴缩短率虽较对照组低，但仍在正常范围。3实验组左心室等容舒张时间和二尖瓣减速时间较对照组明显延长。4实验组中继发糖尿病／糖耐量减低组与非DM/IGT组进行比较，前者仅室间隔有较明显增厚，其余各项参数2组间差异均无统计学意义。

The parameters showing left ventricular systolic function, such as ejection fraction and fractional shortening in acromegaly group were no significant difference, compared with those in control group.

反映心脏收缩功能的参数，射血分数和左室短轴缩短率，早期肢端肥大症患者与对照组比较无显著性差异。

In regard to the highly non-linearity of the equations for recrystallisation fraction and grain growth,an effective time compensated by temperature is defined,by which the time additivity is reasonable and suitable for temperature-varying conditions.

针对再结晶动力学方程和晶粒长大方程对时间和温度的高度非线性，定义了一个经温度补偿的适用于变温过程的等效时间，解决了变温状态下对时间的叠加问题。

A series of thermoplastic polyurethane elastomers with different fraction of hard segments based on poly (ethylene-propylene adipate)/ethylene oxide/tetrahydrofurancopolyether as soft segments were synthesized.

合成了以PET/PEPA为软段的不同硬段含量的热塑性聚氨酯弹性体，利用凝胶渗透色谱、傅立叶变换红外对其进行了表征，并测试了其力学性能。

Through computer simulation, on the random distributed active sites surface, the relation between the fraction of available sites and adsorbate amount can be calculated.

通过计算机模拟，在随机分布一定数量活性中心的吸附剂表面上，求得了可接近活性中心分率与吸附量之间的关系，并用带两个参数的新修正的Langmuir式表示。

The influence of mass fraction of silver on adsorption capacity was also studied.

同时，研究了载银量对吸附能力的影响。

High purity aluminum or allumen (including 1% Zn, mass fraction) alclad on 2024 aerolite is usually employed for improving corrosion resistance. This alclad will greatly impact the mechanical properties of friction stir welded joint.

为提高2024航空铝合金材料的抗腐蚀性能，在其表面通常包有一层高纯铝或含Zn 1%的锌铝合金，包铝层在搅拌摩擦焊时会对接头的性能产生较大的影响。

This thesis is to simulate three-dimensional gas-liquid two-phase flow in a new efficient aeration mixing tank, and to evaluate the performance of this equipment and to study the effects of operating parameters on volume fraction of the air phase in the tank by using commercial CFD software.

本文针对一种新型曝气搅拌设备，采用计算流体力学的方法用FLUENT软件来模拟设备内的气－液两相三维流动场，评价该设备的性能，考察设备内的气相分布情况随着操作参数的变化规律。

In most of Africa, meanwhile, only a fraction of people have bank accounts—but there is huge demand for cheap and convenient ways to send money and buy prepaid services such as airtime.

与此同时，在非洲大部分地区，只有小部分人拥有银行帐户。但是对便宜简便的汇款方式和购买预付费的服务的需求非常强劲。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。