查询词典 systematic sampling

The preserved species may lack genetic representativity because of poor sampling. Inappropriate plantations, inadequate records and unclear kinships jeopardize endangered species to genetic confusion, inbreeding depression or outbreeding depression.

由于引种或取样的不足，容易导致被保存的物种缺乏足够的遗传代表性；盲目的引种、不合理的定植以及材料的来源不清则会导致稀有濒危植物的遗传混杂、近交衰退或杂交衰退；人为选择和生长环境的改变也容易造成濒危物种对迁地保护的遗传适应。

Thus, this study attempts to measure heavy metal concentration in Chinese herbal medicine over-the-counter drugs, to analyse users' motives and intensions, to assess the risk of health, and provide reference to regulatory authority. Data were collected through questionnaire in Miao-Li county, sampling, and laboratory measurement of the metal concentration in Chinese herbal medicine over-the-counter drugs.

是以本研究对苗栗县民使用中药者进行问卷调查，以调查其使用中药之动机及意向，并抽样市售中药成药四十八种，检验其含铅、砷、镉及汞之浓度，并探讨其对人体健康是否会造成风险，进而供有关当局制定相关安全标准量用。

The present sampling approach has worked very well from practical and organizational point of view, but its results have been proven to be sensitive to overrepresentation of one of the cropping strips within the field.

目前所采用的取样方法具有很好的可操作性和组织性，但其结果对过高地估测田间每一作物带的相关值非常敏感。

The works in this show are mainly the segmental and sampling presentation of the society indulgent of human desire, mainly a kind of overripe image. So Images of Desire is not completely accurate.

这里艺术家的作品，大多是对"物欲横流"社会的一种片段和抽样的表现，大多是一种是"糜烂图像"，所以"欲象"也不甚确切。

The author studied the changes in estradiol in female urine, mating behavior and factors influencing male mating investment in maske palm civet by using radioimmunoassay technique behavioral sampling techniques, and got the following results and conclusions

笔者使用同位素放射免疫分析方法研究了雌二醇在雌性果子狸繁殖中的变化过程、使用随机取样法和所有事件取样法研究了果子狸的交配行为和影响雄性果子狸交配投资的因素。得到以下结果和结论

Result There are sterile growth of film culture of bacillus subtilis of central paraffin oil and directin paraffin oil sampling.

结果石蜡油中心的枯草芽孢菌片培养及石蜡油直接取样培养全部无菌生长。

Mainfactors are as follows: standard solution、 regressive curve、 parallel experiment of sample、 diacetyl monxime's reagent colorimetic method、 spectrophotometer、 sampling , etc .

影响测定结果的分量主要有：标准溶液、回归曲线、样品平行试验、二乙酰一肟分光光度法、分光光度计、取样等。

For the first time, this study conducted a series of field sampling in multiple locations over several years and demonstrated that the B and Q biotypes first invade areas with high frequency of transport through human movement of plant materials, and then rapidly spread into surrounding areas and displace indigenous genotypes, and in parallel with displacement significant changes in sex ratio occurred in the mixed populations. Crossing experiments demonstrated that in the B. tabaci species complex there are many genetic groups that are completely or nearly completely isolated in reproduction. Apart from behavioural mechanisms, difference in host plant suitability and insecticide susceptibility between whitefly biotypes may also play important roles in the displacement of indigenous whiteflies by alien whiteflies in Zhejiang.

本研究首次以一个地理区域内广泛系统的野外调查数据证实，B型和Q型烟粉虱首先通过花卉苗木调运入侵交通较为发达的地区，然后迅速向周边扩张并取代土著烟粉虱，同时入侵取代过程伴随着混合种群中性比的变化；杂交试验证明烟粉虱复合种内存在多个生殖上隔离或基本隔离的遗传群；B型烟粉虱在浙江省内迅速取代土著烟粉虱，除行为机制外，生物型之间寄主适应性和药剂敏感性等方面的差异也可能在此过程中起着重要作用。

PSP MasterQ is a high quality parametric equalizer designed to operate at sampling rates ranging from 44.1 to 192kHz.

PSP MasterQ 是一款高质量的参量均衡器，可在从44.1到192kHZ的取样频率下操作。

And use the award-winning teachers of teaching excellence awards between 2003 and 2007 held by Ministry of Education as parent population, and were implemented by 2-stage strata and cluster sampling survey with a total of 580 questionnaires distributed, and 353 valid questionnaires with a rate of return of 60.8%.

并以92至96学年度教育部所举办之教学卓越奖得奖教师为母群体，实施两阶段分层比例丛集抽样调查，共发放580份问卷，回收有效问卷共353份，有效回收率为60.8%。

A strange and mysterious deep sea creature.

一种奇异、神秘的深海生物。

It's a yellow rectangle .

这是黄色的长方形。