查询词典 sampling fraction

Results show that the best value of w is 7~10% and 5~7%, i is 0.08~0.2 A/cm^2 and 0.03~0.05 A/cm^2 respectively, during the electrolysis fluorination of pyridine and tributylamine; the addition of N-butyl mercaptan into the organic mixture can stabilize electrolysis process with its mass fraction 15~20% at best; impulse current polarization work status of low load is helpful to the electrolysis process and reduces corrosion rate of anode; electrolysis temperature is suitable at 0~20℃; electrobath can use electrolyte inner circulation structure, exterior circulation structure or blending structure.

结果表明：吡啶和N-三丁胺电解氟化的最佳值w分别为7%~10%和5%~7%，i分别为0.08~0.2A/平方公分和0.03~0.05A/平方公分；有机混合物中添加N-丁基硫醇可稳定电解过程，其质量分数最佳为15%~20%；采用低负荷的脉冲电流极化工况有利电解过程，降低阳极的腐蚀速度；电解温度0~20℃为宜；电解槽可采用电解液内循环、外循环结构，或其混合结构。

The light on our convention meaning is visible light, this part light is the one fraction of electromagnetic wave spectrum only.

我们常规意义上的光是可见光，这部分光只是电磁波波谱的一小部分。

Tuesday's experiment took place at a record total collision energy of 7 billion billion electron volt s and at a nano-fraction of a second slower than the speed of light in the 16.8 mile Large Hadron Collider.

周二的实验中，在长达16.8英里的大型电子对撞机里，两束质子流以创纪录的7万亿电子伏特的总能量进行超高能量对撞，对撞速度仅比光速慢了1纳秒。

Determine which fraction of the eluate contains both insecticides.

并且确定每一部分洗脱液中包含的所洗脱的杀虫剂。

After induction and massive expression of the 3 fusion proteins, the soluble fraction was purified with 50% Ni-NTA resin affinity chromatography, which was proven by SDS-PAGE of the eluate to be a method that can achieve high purity of fusion proteins.

大量诱导表达三种融合蛋白后，取含FA、FB融合蛋白的可溶性组分用50％Ni-NTA树脂过柱纯化，将洗涤部分进行SDS-PAGE检测，表明用此纯化方法能纯化到高纯度的融合蛋白。

The crude extracts were isolated by column chromatography of alkaline alumina, and a bioactive fraction was obtained from the 80%ethanol eluate.

此液经碱性氧化铝柱层析分离，其80%乙醇洗脱的 C 组分显示生物活性。

he fraction of pneumonia that tends to result in empyema is still low, so there is a huge benefit from immunization," Dr. Tancredi said in a press release.

Tancredi医师在一篇新闻稿中表示，倾向造成肺脓疡的肺炎比例仍然偏低，因此接种疫苗所带来的好处仍然是非常大的。

Different fraction has different concentration REE, and the REE original value of eolian may be affected by wind choice.

且黄土一古土壤的REE含量可能受风力分选的影响。

EPACT requires that a fraction of new purchases of light-duty vehicles 41 for qualified fleets be alternative-fuel vehicles.

能源政策法规定，一个新的采购光部分的合格船队轻型车辆41替代燃料汽车

In a global context, moreover, it is but a small fraction of the larger failure of the United States to deal equitably with the human fallout from its national security policies.

在全球范围内，此外，也只不过是一小部分规模较大的失败，美国处理公平与人权的微尘，其国家安全政策。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。