查询词典 on the threshold of

Ealuation of the exclusie use of calcium or itamin D3 showed no antifracture efficacy for patients receiing 800 IU of itamin D3 per day.44 Howeer, the mean concentration of 25-hydroxyitamin D increased from 15.2 ng per milliliter to just 24.8 ng per milliliter (37.9 to 61.9 nmol per liter), which was below the threshold thought to proide antifracture efficacy.8 Porthouse and colleagues,45 who ealuated the effect of 800 IU of itamin D3 per day on fracture preention, did not report concentrations of 25-hydroxyitamin D.

对单独服用钙或维生素D3的评价显示，每天服用800IU维生素D3没有抗骨折效果。平均25-羟基维生素D浓度从15.2ng/ml仅上升到24.8ng/ml(37.7到61.9nmol/l)，但仍低于认为可以产生抗骨折作用的阈值。Porthouse及其同事评价了每天800IU维生素D3对预防骨折的作用，并没有报道25-羟基维生素D浓度。

In this paper,an improved genetic algorithm is proposed to overcome the shortage of early convergence and stagnation in the traditional genetic algorithm,which is based on unconvertible rate of crossover operator and mutation operator.Moreover,the user page interest measure threshold is introduced into the association rules mining.

针对传统遗传算法在提取关联规则问题时常采用固定染色体交叉概率和染色体变异概率，容易出现早熟、收敛速度较慢的问题，提出了改进的遗传算法，并在关联规则的提取中增加了用户页面兴趣度这一阈值，成功地运用到某商业网站服务器日志挖掘。

One hotspot in the research work of random laser is the study about the influence of resonance characteristics made by external mirror,which mainly focuses on experimental research,including reducing the threshold、emergencing output light intensity and unidirection by microcavity.

外镜对随机激光振荡特性的影响已成为该领域研究的焦点，目前该研究主要集中在实验研究方面，包括微腔降低随机激光器阈值、提高出射光强度和准直性等。

The evolution of a molecular system excited above its ionization threshold depends on a number of parameters that include the nature of the excited states and their couplings to the various continua.

被激发到电离阈值以上的分子体系的演化依赖于激发态的特征和与连续态的耦合等多种参数。

When the amount of trash in dustbins passes a defined threshold, a central control system will switch on turbines to cut air pressure in the tunnels and suck in the trash, which is then separated, compressed, filtered, purified, deodorized and ejected at a trash station.

当垃圾箱中的废弃物达到一定的临界值时，中央控制系统会启动涡轮抽气装置，产生负压气流，将垃圾箱中的垃圾吸入输送管道内。所有废弃物最终将被传送至垃圾站，经过分离、压缩、过滤、净化、除臭等过程后排到户外。

The human seasons Four Seasons fill the measure of the year; There are four seasons in the mind of man: He has his lusty Spring,when fancy clear Takes in all beauty with an easy span: he has his Summer,when luxuriously Spring's honeyed cud of youthful thought he loves to ruminate,and by such dreaming high Is nearest unto heaven:quite coves His soul has in its Autumn,when his wings He furls close;contented so to look On mists in idleness-to let fair things Pas by unheeded as a threshold brook.

译：人生的四季春夏秋冬把一年的时间填满，人的心灵也包含着四个季节。在他朝气蓬勃的春天，那清晰的幻想早一瞬间就把所有的美轻易囊括。在他的夏天，他喜欢用年轻思想把春天里采的花蜜反复品位，细细欣赏那蜜汁的甘甜芳香，乘着这高远的梦想冲天而飞。他心灵的秋天有如小湾安谧，这时他心满意足地收拢翅膀，悠闲地凝视着雾色--而美好的事物犹如门前的小溪悄然而逝。

The human seasons Four Seasons fill the measure of the year; There are four seasons in the mind of man: He has his lusty Spring,when fancy clear Takes in all beauty with an easy span: he has his Summer,when luxuriously Spring's honeyed cud of youthful thought he loves to ruminate,and by such dreaming high Is nearest unto heaven:quite coves His soul has in its Autumn,when his wings He furls close;contented so to look On mists in idleness-to let fair things Pas by unheeded as a threshold brook.

春夏秋冬把一年的时间填满，人的心灵也包含着四个季节。在他朝气蓬勃的春天，那清晰的幻想在一瞬间就把所有的美轻易囊括。在他的夏天，他喜欢用年轻思想把春天里采的花蜜反复品位，细细欣赏那蜜汁的甘甜芳香，乘着这高远的梦想冲天而飞。他心灵的秋天有如小湾安谧，这时他心满意足地收拢翅膀，悠闲地凝视着雾色--而美好的事物犹如门前的小溪悄然而逝。

To effectively accomplish image segmentation tasks for noisy image,one improved algorithm for the selection of the local dynamic threshold based on the niched genetic algorithm was proposed.

针对基本遗传算法的一些不足之处，利用小生境的思想，对其进行了一些优化。

MethodsThe pharmacological effects of the Ziziphus jujube leaf extract on the autonomic activities of mice, the time of sleep induced by pentobarbital sodium, the sleeping synergistic action of mice with barbital sodium at sub-threshold and hypnotic dosages and the central inhibitory effects in mice induced by amphetamine were investigated.

目的观察酸枣叶提取物对中枢神经系统作用。方法考察酸枣叶提取物对小鼠自主活动的影响、对延长戊巴比妥钠诱导的小鼠睡眠时间、对阈下巴比妥钠的睡眠协同作用以及对苯丙胺中枢兴奋作用的影响。

Based on this issue, in light of the actual characteristics of the speech signal, Short-term use of energy and zero rate of the combination of double-threshold algorithm to achieve the given document voice endpoint detection.

本文针对这个问题，结合实际语音信号的特点，采用了短时能量和过零率相结合的双门限的算法来实现对给定语音文件的端点检测。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。