1)occurrence quantity发生量
1.Use of mark-release-recapture methods in the forecast of the occurrence quantity of Dendrolimus punctatus;标记释放回捕技术在马尾松毛虫发生量预测中的应用
2.Forecast of the occurrence quantity of Monochamus alternatus by using neural network;神经网络在松墨天牛发生量预报中的应用
3.On the other hand,the relation was studied between occurrence quantity of the insect and temperature and moisture in May or June.介绍了落叶松鞘蛾的形态特征 ,和该虫在五台山林区发生的物候征兆 ,及发生量与五六月间温、湿度的关系。
英文短句/例句
1.Ⅰ.POLLUTION SOURCE AND GENERATING RATE OF CMP EFFLUENTⅠ．废水污染发生源及发生量的研究
2.Large accidental spills have occurred.发生大量泄漏事故。
3.Try to avoid accidents.尽量防止发生事故.
4.The incidence of positive symptom was produced by the combination of the independent variables (endogenous variable).经过自变量组合(内生变量)产生阳性症状发生率。
5.having more than the average number of accidents.发生事故的数量比平均数量高。
6.The body must dissipate heat as fast as it produces it.人体散发热量必须和产生热量一样快。
7.Comparative Study on the Growth Characteristics and Yield and Quality of Chuan Bai Zhi川白芷生长发育和产量质量对比研究
8.On the Origin and Development of Classifier Ke(窠)and the Appearance of Classifier Ke(棵)量词“窠”的产生、发展与量词“棵”的出现
9.EFFECT OF NITROGEN ON GROWGH,YIELD AND CONTENTS OF ESSENTIAL OIL OF Dracocephalum moldavica L.施氮量对香青兰生长、产量及挥发油含量的影响
10.Considering quality as life to achieve the transition from scale-based to quality-based development;以质量为生命 实现规模发展向质量发展的转变
11.Views on How to Scientifically Improve the Quality of Student Party Members;科学发展观与发展学生党员的量质观
12.Research on Soft-Sensor Methods of Biomass On-Line Estimation in Fermentation Process Based on SVM;基于支持向量机的微生物发酵过程生物量软测量方法研究
13.The Energy Condition for the Occurrence of the Spontaneous Radiation of Spherically Symmetric Non-static Black Hole;球对称带电蒸发黑洞发生自发辐射的能量条件
14.Influence of emergent life event on quality of life in students from professional colleges;生活突发事件对职业院校学生生活质量的影响
15.He found that a given amount of mechanical energy invariably produced the same amount of heat.他发现一定量的机械能会恒定地产生等量的热。
16.showing characteristics of life; exerting force or containing energy.表现出生命的特点；发出力量或者包含能量。
17.Soft measurement system of oxygen content of continuous catalytic reforming regenerator is developed.开发了连续催化重整再生器氧含量软测量系统。
18.(physics) occurring without loss or gain of heat.（物理学）发生时既不失去热量也不获得热量。
相关短句/例句
Occurrence amount发生量
1.And based on the method of effective cardinal number, the prediction formula for insect occurrence amount has be. 经1994～1998年林间样地调查和饲养观察,查明了云杉球果小卷蛾在祁连山北坡林区的成虫羽化进度、卵孵化进度、不同发育时期的物候现象、雌雄性比及各虫态的死亡率,依据有效基数法,得到发生量预测公式。
2.The feamale pests developed differently and were closely related to their reproductive capacity,death rate and occurrence amount of the later generation.该害虫自然种群内雌虫个体间发育差异很大 ,并与其生殖力、死亡率及后代的发生量有密切关系。
3)occurrence[英][?'k?r?ns][美][?'k??ns]发生量
1.A Study on Relationship Between Occurrence of Ostrinia furnacalis and Meteorolgical Conditions;齐齐哈尔市玉米螟发生量的预测预报
2.Study on the Long一Term Forecast of Heliothis armigera Occurrence in North Jiangxi;赣北棉铃虫发生量的长期预测研究
3.BP net model of damaged area by Dendrolimus punctatus and meteorological factors was established by input of 8 meteorological factors which had close relation with occurrence of D.运用人工神经网络的原理和方法,选取与马尾松毛虫发生量相关关系密切的8个气象因子作为样本的输入特征,建立马尾松毛虫有虫面积与气象因子的BP网络模型,结果表明:所建立的BP模型,具有令人满意的拟合精度和预测精度。
4)reproduction quantity发生量
1.Influence of photoperiod on the reproduction quantity of D.melanogaster;光照时间对果蝇发生量的影响
2.In order to study the influence of different illumination intensity on the reproduction quantity of drosophila melanogaster in comparison to aphotic cultivation,three photoperiod gradients and three illumination intensity gradients have been provided for processing 3 genotypes of drosophila under illumination respectively.设定三个光照强度梯度,分别对三种基因型的果蝇进行三个时间梯度的光照培养,暗培养作对照,探究不同光照强度对果蝇发生量的影响。
3.melanogaster,investigated the effects on the reproduction quantity,the growth period and the median lethal time of Drosophila.添加不同浓度的两种合成色素培养野生型黑腹果蝇,以无色素添加组作对照,探究色素对果蝇子代发生量、发育期及半数死亡时间的影响。
5)quantity[英]['kw?nt?ti][美]['kwɑnt?t?]发生数量
1.Through systemically survey its occurrence regularity was studied, quantity of B.通过大田系统调查,对敦煌市棉田烟粉虱的发生规律进行了研究,并对不同棉花品种上烟粉虱的发生数量进行了比较,同时对烟粉虱的防治进行了初步研究。
6)The methane output沼气发生量
延伸阅读
发生量预测发生量预测emergence size forecast 发生t预测(emergenee size fore-cast)害虫预测预报内容之一，即依照现时害虫的发生动态和环境条件，参考历史资料，估计其未来发生数量。害虫发生量与农作物受害程度和损失率有直接关系。掌握害虫种群的发生基数、发育速率、存活率，繁殖率和各种环境因素对数量影响的大小，是发生量预测的基础。常用预测方法有以下几种: 数理统计预测法包括多种统计模型预测法、经验指数预测法、判别分析预测法、回归预测法、逐步回归和马氏链转移矩阵预测法等。 世代离散的预测模型适用于每年发生世代少、世代不重叠的害虫，依据其发生基数与繁殖率预测未来的发生数量。基本模型为: 从、1=R。·从式中N。*，为未来数量;从为现时虫量;Ro为繁殖率，可用历年两相邻世代数量比例的平均值及标准差表示此参数。如果当地繁殖率波动较大，则须研究主导因素与Ro的变量关系，建立亚模型插入上述模型。 世代重叠的预测模型适用于每年发生世代多、生活史短、各虫态重叠、或生活史长的多年性害虫(见种群增长模型)。 生命表的数理联合模型莫里斯和瓦特(R.EMorris%26K.E.F.Watt) 1963年以种群数量趋势指数模型为基础，建立了这一模型: 以‘1一从(SE·SLI·SLZ…… S。·凡·瓜·F·丹) 一从〔(l一峨)(1一战，)(1一战2卜··… (l一办)(1一么)〕瓜·F·丹式中从、1为t+1时间种群数量，Nt为t时间种群数量，凡为各虫期存活率，dx为各虫期死亡率，瓜为雌性比例，F为每雌标准产卵率，PF为雌虫实际产卵率比标准产卵率。 经验指数预侧法在分析当地影响害虫发生的主导因素的基础上，将历史资料中害虫发生量与主导因素进行统计分析，求出估计害虫发生量趋势的经验指数。常用的经验指数有:①温雨系数或温湿系数:温雨系数一里或 T 尸(了一C)RH温湿系数=一下三，一~或 了RH(T一O式中尸为月(旬)总降雨量，T为月(旬)平均温度，RH为月(旬)平均相对湿度，C为害虫发育起点温度。②气候积分指数:Q钊~竺~+一兰)/2 Jx Jy式中Q为水分积分指数，文为雨量，少为雨日数，Jx为常年雨量标准差，山为常年雨日标准差。③综合猖撅指数;将气候因素和虫口密度等综合统计计算，分别求出大发生年、中发生年和轻发生年的综合指数，作为某种害虫未来发生量预测的依据。
