查询词典 natural number

In the time period under consideration German cities were subject to a number of large 'quasi-natural experiments' namely the heavy destruction of cities during WWII and the split and subsequent reunification of Germany.

在该时期内德国的样本城市正处于'准自然实验'，即在二战期间城市遭受严重的破坏和其后德国的分裂与统一。

It is based on the experiment and research of Wind Wheel series of the Wind Generator which is provided by the financial aid of National Natural Science Foundation.[Approval number: 59776033], which is a basal experimental study for the questions existed in wind rotor blade of MW wind generators in China.

以国家自然科学基金资助项目《风力发电机风轮系列化的实验与研究》[批准号：59776033]为资助，针对我国兆瓦级风力发电机组风轮叶片存在问题，进行了兆瓦级风力发电机组风轮叶片基础实验研究。

A method is proposed by separating ambient noise signal and withdrawing the early-time multi-breakdowns of diesel engine based on natural gradient algorithm in the case that the number of vibration sources is unknown.

提出一种在振动源个数未知的情况下，采用自然梯度算法分离环境噪声信号的同时提取柴油机早期多故障的方法。

A large number of natural gas emit from the wellhead and format the mixture flammable vapor cloud with air.

井喷失控后大量天然气从井口喷出，并与空气混合形成可燃性蒸气云。

Born in country wine cellars in Australia, a country renowned for its natural and quality red soil, Benei is the product of traditional and modern wine-making technology, and its exclusive and exquisite flavors are highly appreciated by numerous wine lovers and ordinary consumers, which number will surely increases in every corner of the globe with time passing by.

她诞生于拥有优良的天然红土资源的澳大利亚的民间酒窖里，充满淳朴乡风和浪漫果香；她以自己精湛的传统酿酒工艺和现代科技的融合，为许许多多的葡萄酒爱好者与消费者提供独特口感、尊贵专享的卓越产品。随着时光的推移，有口皆碑的宾尼品牌将传遍世界的每一个角落。

Its working principle is introduced here: when a gas or powder starts a flame or explosion, the ultraviolet sensor will acquire the signal and sent it to the controller to produce the trigger voltage, and then the explosive suppressor will release a great number of gas promptly spraying dry powder extinguishing agents, which thereby form extinguishing agent smoke and effectively extinguish explosion flame. It is rapid and of strong antiinterference ability, high reliability and can be fixed easily. It is capable of effectively suppressing natural gas explosion in the simulative gas explosion test. It can be applied in CNG stations or other site where has explosive and combustible gas whereby to enhance the overall accident control ability.

当发生气体燃烧、爆炸时，紫外传感器接收火焰信号，传送至控制器，控制器产生触发电压，使抑爆器的产气剂释放出大量气体，驱动快速喷撒出干粉灭火剂，形成足够浓度的灭火剂粉雾体，有效扑灭爆炸火焰，具有动作速度快、抗干扰能力强、可靠性高、安装使用方便等优点，在天然气模拟爆炸试验中能有效抑制天然气爆炸，可用于CNG加气站或其他燃烧爆炸性气体场所，提高其整体防灾抗灾能力。

Introduces the raw cotton property effect on yarn strength ,and deals throug h the experiment with the relationship between cotton yarn strength and cotton f iber thinness,the rate of short-staple and its number of natural convolution,so as to provide theoretical reference when using cotton fiber reasonably.

介绍原棉性能对纱线强力的影响，并通过实验探讨棉纱强力与棉纤维线密度、短绒率、天然转曲数之间的关系，为合理使用棉纤维提供了理论依据。

The effect of number of short-days on development and flowering of 'Millennium＇ and ' Velveteen＇ poinsettia was studied by transferring plants from short-day to natural long days.

短日照处理不同天数后转到自然长日照下，研究短日照处理对促成栽培的'千禧'和'早生天鹅绒'一品红生长开花的影响。

The results show that, the nitrate-N concentration in groundwater in the reed area was 0.2~0.8mg/L and significantly lower than that in surrounding wells (more than 20mg/L), and the reed wetland can remove nitrate pollution in shallow groundwater. The distribution of denitrifying bacteria showed obvious rhizosphere effect, and the higher biodenitrification in natural reed wetland was related to the distribution of denitrifying bacteria. There was a negative relationship between the nitrate-N concentration and the number of denitrifying bacteria in groundwater.

结果表明：芦苇区浅层地下水中硝酸盐氮仅为0.2~0.8mg/L，远低于湿地周围井水中硝酸盐氮质量浓度（大于20mg/L），芦苇湿地能够去除浅层地下水中硝酸盐污染；反硝化细菌在土壤中的分布呈现明显的根际效应；野生芦苇湿地较强的生物脱氮作用与反硝化细菌分布有关，地下水中硝酸盐氮含量与反硝化细菌分布呈负相关。

Major new findings of this study:(1) We developed a cost-effective,efficient,and reliable video recording system for observing and recording the mating behaviour of whitefly on live plants.With this novel system,a large number of accurate and continuous recordings of courting and mating behaviour of this insect can be made on live plants under more natural condition.

本研究的主要创新之处(1)首次自主设计组装了一套经济可靠的录像观察和记录装置，可连续几天详细记录烟粉虱成虫在活体植物上较自然状态下的求偶和交配行为。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷