查询词典 biased sample

First, those studies are biased: they tend to be carried out by staff at drop-in centers and by the police, who tend to see the most troubled streetwalkers .

首先，那些研究存在偏差：它们很可能是由收容所的工作人员或员警进行调查的，而这些人易于见到那些麻烦最大的街头妓女。

First, those studies are biased: they tend to be carried out by staff at drop-in cent er s and by the police, who tend to see the most troubled streetwalkers.

首先，那些研究存在偏差：它们很可能是由收容所的工作人员或员警进行调查的，而这些人易於见到那些麻烦最大的街头妓女。

Theatrical System of Dialectics is not only the dialectical relationship of arena element of the dialectal theater system of Brecht, art taste and society effect, and the development theory of Marxism and the drama representation or innovation, but also opening out the biased, intentional or unintentional misinterpretation and utilitarian inclination in the reception process.

这里的&辩证&不仅指向布莱希特戏剧体系内在关联，即舞台各元素之间的相互依存关系，艺术审美和社会功效的关系，以及马克思主义辩证法的发展论和戏剧艺术表现与创新的关系；而且揭橥布莱希特与我国新时期戏剧之间的比较关系，即我国接受布莱希特过程中所出现的整体与局部、理解与误读、理论与实践以及艺术追求与意识形态导向等具体情境。

They found that the first 12 months of pregnancy coincides with June 1967 war Israel and the Arab (also known as the "Six Day War") during the climax of the children born to women in the adult period, the proportion suffering from schizophrenia obviously biased High.

他们发现，怀孕第二个月适逢1967年六月以色列和阿拉伯战争高潮期间的妇女所生的小孩，在进入成年期后，罹患精神分裂症的比例明显偏高。

Some of you may find it a little biased but please bear with my views.

你们有些人可能觉得有点偏见，不过，请与我的看法承担。

In the study of microwave sintering of BaTiO〓 PTC ceramics, when the applied microwave power are above than a certain value, the abnormal axial shrinkage of the sintered sample will occur, by the analysis of SEM and XRD, it is found the microstructure and phase are different with conventionally sintered sample, the reason for this phenomenon is due to orientational grain growth by the action of electric field in the microwave sintering process.

微波烧结BaTiO〓电子陶瓷时，当所加的微波功率超过一定值时，首次发现烧结样品出现轴向异常收缩现象，采用SEM、XRD等分析发现其微观结构与常规烧结有巨大的差异，这是BaTiO〓材料的晶粒在微波场中受电场力作用而发生的取向生长造成的。

The differential eguations and boundary conditions are established, based on these hypotheses. The theoretical formulary about sample atom number with different diffusion coefficient are reasoned out; the relationship between the isotope abundance ratio and the sample wastage of melting and solid samples and the samples simultaneously at evaporation and decomposition are discussed in theory.

根据这三条假设建立了样品原子数的微分方程及边界条件，推导出了不同扩散系数的样品原子数的理论公式，从理论上讨论了熔融态、固态样品以及蒸发分解同时发生的样品同位素丰度比与样品消耗量间的关系。

The proteins and enzymes in saliva sample were removed by centrifugation and filtration of the mixture of acetonitrile and saliva sample.

将等体积的乙腈和唾液混合，然后通过离心和过滤的方法除去唾液样本中的蛋白质和酶。

The method has been used to determine Phthalic esters in drinking water and seawater sample. 3. Single drop microextraction, followed by gas chromatography with flame ionization detection has been applied to determine Formaldehyde, Acetaldehyde and Acraldehyde in water based on 2,4-Dinitrophenylhydrazine derivatization. Extraction solvent, extraction time and stirrer speed were optimized. Optimal experimental conditions were as follows: 1.6μL toluene microdrop exposed for 30 min in a 3ml aqueous sample placed in 4ml vial and stirred at 600 rpm/min.

以2，4-二硝基苯肼衍生，单滴液相微萃取与气相色谱火焰光度检测器联用测定水样中的甲醛、乙醛、丙烯醛，考察了萃取溶剂、液滴大小、萃取时间、搅拌速度、盐效应等对该方法的影响，并对影响液相微萃取的各种因素进行了系统的阐述，确定了该体系的最佳实验条件，实现了甲醛、乙醛、丙烯醛的提取和富集。

This research shall be obtain that ocean-sand motor shall have more compressive strength early, but later strength shall descend, by means of non-standard sand mixing sample is quite obvious. By means of 50% ocean-sand substitutes for river-sand to mix fine aggregate compressive strength early shall be risen 20%~30%; Adds slag to ocean-sand or a half of river-sand and ocean-sand to make motor test sample, Compressive strength、bending strength and tensile strength shall be according to slag additament, by means of. slag add itament substitutes for cement 40%~60% is most. But slag be able to substitute for cement is too enough, 1ater strength shall be descent.

由本研究可得知海砂拌和的水泥砂浆，其早期抗压强度较高，而晚期强度则有下降的趋势，其中以非标准砂拌和效果最为明显；若以50%海砂替代河砂做为拌和细骨材，其早期抗压强度约上升20%~30%；添加炉石於海砂或河砂、海砂各半的水泥砂浆，其抗压、抗弯及抗拉强度，会随著炉石添加量增加而增加，其中以40%~60%炉石替代量为最佳，但是炉石替代量过高，晚期强度会下降；在相同水灰比状况下以海砂拌和水泥砂浆做比较，以非标准砂拌和有较高的抗压强度，其强度约比标准砂高10%左右。

You'll be in trouble it you don't watch out .

如果你不注意，你会有麻烦的。

Shaped like a biconvex lens.Of, relating to, or having the form of a hyperbola.

双曲线的属于双曲线的，与之有关的，或有双曲线形状的