It works at a very low concentration-10 parts per billion-so you can't smell the compound.
这种物质在极低浓度下(10ppb)就可以发挥作用，因此，你是闻不到这种物质的。
Titanium is useful at low concentration only.
钛只在低浓度时起作用。
Some organic solvents could improve its activity at low concentration.
低浓度有机溶剂的存在有利于抑菌活性的提高。
Objective:To improve paracetamol Injection solution of low concentration.
前言： 目的：对低浓度的对乙酰氨基酚注射剂进行改进。
The swelling of Polymer is the basis of continuous phase at low concentration.
聚合物溶胀是聚合物在较低的浓度下形成连续相的基础。
A low concentration of oxygen-carrying red cells robs the body of energy-releasing oxygen.
携氧红血球数量少会使肌体失去释放能量的氧气。
This paper studies the degradation of low concentration Acid Brilliant Scarlet GR by ultrasound.
本文研究了用超声波降解低浓度酸性大红GR染料废水。
Conclusion There is purification effect of low concentration ozone on indoor formaldehyde pollution.
结论低浓度臭氧对室内空气甲醛污染有净化效果。
The invention discloses a novel method for treating waste water of heavy metal with low concentration.
本发明公开了一种较低浓度重金属工业废水处理的新方法。
Objective To study the effect of exposure to low concentration of lead on female reproductive function.
目的研究长期暴露在低铅环境下对女工生殖机能健康状况的影响。
Objective To understand purification effect of low concentration ozone on indoor formaldehyde pollution.
目的了解低浓度臭氧对室内空气甲醛污染的净化效果。
Objective To study the effects of low concentration benzene on lipid peroxidation and mutagenicity in mice.
目的探讨低浓度苯对小鼠过氧化损伤及致突变作用。
Smoking and the exposure to low concentration mixed benzene have combined damaging effect on lymphocyte DNA.
结论吸烟和低浓度混苯联合接触可引起淋巴细胞DNA的损伤。
The movement of ions or molecules from regions of high concentration to low concentration within a solution.
溶液内离子或分子从高浓度区到低浓度区的运动。
Objective To study effects of low concentration vinyl chloride (VC) on DNA damage in peripheral lymphocytes.
目的探索低浓度氯乙烯对外周血淋巴细胞DNA损伤效应。
Basically, low concentration of alkane background gas has no effect on the removal efficiency of malodorous gas.
低浓度的烷烃背景气体对恶臭的脱除效率基本无影响。
At very low concentration in experiment, the phenomena of avalanche transverse expansion was observed obviously.
在三乙胺浓度很低时，实验观察到明显的雪崩横向扩展现象。
Objective To inspect the effects of low concentration of TCE on human lipid peroxidation and anti-oxidation enzyme system.
目的观察低浓度三氯乙烯(TCE)接触对人体脂质过氧化和抗氧化物酶系统影响。
Objective To compare the analgesic effect of ropivacaine with levobupivacaine at low concentration for labor alleviating pain.
目的比较低浓度罗哌卡因和左旋布比卡因用于分娩镇痛的效果。
Objective:To study the effects of low concentration of tannic acid(TA)on neuron membrane recycling following the neuron exocytosis.
目的：研究低浓度单宁酸（TA）对胞吐后神经细胞膜再循环的影响。
Objective The effect of oxidation and peroxidation in workers exposed to oil refinery waste water in low concentration was observed.
目的探讨低浓度炼油污水作业对人体氧化和过氧化反应的影响。
AIM: To investigate the effect of low concentration desflurane on hemodynamics and fibrinolysis in patients during general anesthesia.
目的：观察低浓度地氟醚吸入对全麻病人血液动力学和纤溶功能的影响。
La had no significant effect on soil bacteria, actinomyces and fungi at low concentration while had inhibitory effect at high concentration.
在低浓度下，镧对土壤细菌、放线菌、真菌的作用不明显，在高浓度下，表现为抑制作用。
The packed tower process not only used for chemical industry, it is also widely used for purifying low concentration industrial waste gases.
填料塔洗涤吸收净化工艺不单应用在化工领域，在低浓度工业废气净化方面也能很好地发挥作用。
The marble machining wastewater is a kind of wastewater with low concentration of organics and high concentration of suspended substance (SS).
大理石加工废水具有有机物浓度低、悬浮物浓度高的特点，排入水体后会造成水体透光率下降。
The experiment on adsorption of low concentration ozone was carried out under atmosphere pressure by using silica gel immobilized with cobalt chloride.
常压下对含钴盐硅胶进行低浓度臭氧的吸附实验，吸附达到饱和后用氮气作为载气加热解吸。
The superoxide dismutase (SOD)and peroxidase (POD) activities in the wheat seedling leaves were increased affected by the low concentration of sulfite.
在低浓度亚硫酸盐作用下，小麦幼苗叶片中超氧化物歧化酶（SOD）和过氧化物酶（POD）活性升高；
New tracer ammonium molybdate was used and samples with high or low concentration of molybdenum were analyzed by means of colorimetry and polarography.
采用新示踪剂钼酸铵，并对高、低不同浓度的钼样品进行比色法和示波极谱法分析。
New tracer ammonium molybdate was used and samples with high or low concentration of molybdenum were analyzed by means of colorimetry and polarography.
采用新示踪剂钼酸铵，并对高、低不同浓度的钼样品进行比色法和示波极谱法分析。
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