有效性

The system can detect hexylamine, dimethyl sulphoxide and acetonitrile properly and is verified that it is valid.

利用该系统准确识别了环己胺、二甲基亚砜和乙腈三种有机化合物，验证了所构造的系统的有效性。

To evaluate the effectivity of biofeedback associating with acupuncture on achalasia pelvic floor syndrome.

探索生物反馈结合针灸这一双联疗法治疗盆底失弛缓所致便秘的有效性。

It is proved that the method is efficiency through the practical application of glutamic acid fermentation process.

通过对谷氨酸发酵过程的实际应用，验证了该方法的有效性。

Because acid rain can transport excessive hydrogen ion into the soil, then cause decrease of pH value and cation saturation, accelerate acidify of soil, therefore, it is significant to study the ecological effects of combined pollution for heavy metals under intimidation of acid rain in the regions where acid rain often take place.

土壤吸附-解吸试验的土壤按照既定方案处理后，在25±1℃，土壤水分20％左右条件下培养2个月，待重金属元素与土壤的反应基本稳定后制样进行等温吸附—解吸试验，研究紫色土在单一及复合条件下镉、锌的吸附特征和酸雨胁迫下的解吸特征以及此条件下吸附一解吸与镉、锌生物有效性的关系。

In this thesis , the effects of acid materials on calcareous soil were studied by using laboratory soil trial and pot experiments trail. The text studied effects of acid materials on pH value in calcareous soil ; studied effects of phosphoric acid (H2SO4 as control) on pH value and micronutrient availability ; studied relation between P and available Fe, Zn in plant; studied effects of acid material on growth of acidophilic plant.

本文采用室内模拟试验和盆栽试验相结合的方法，研究了不同酸性物质对石灰性土壤的酸化效果；磷酸和硫酸对石灰性土壤pH值及微量元素有效性的影响；植物体内磷、有效铁、锌的关系；不同酸性基质对嗜酸植物生长的影响。

Then with the aid of the system,the relative effectiveness of the acquisition cost of weapo...

借助该系统分析了武器装备采购费用的相对有效性。

If the verdict is acquittal, it is unchallengeable.

如果判决是宣告无罪，法官不能质疑这个宣告的有效性。

XXXX shall perform analysis and initiate corrective action to prevent recurrence. Cycle time related to rejected product analysis should be consistent with the determination of root cause, corrective action and monitoring the effectiveness of the implementation.

为防止不合格的再发生，公司必须进行有效的分析，采取必要的纠正措施和过程更改，有关退货产品分析的周期应当与确定其根本原因，纠正措施和监控实施的有效性相一致。

It has important practical significance to decline biological validity and activeness of heavy metal by deactivated processing.

对畜禽粪便堆肥中的重金属进行钝化处理，降低其生物有效性和活性，具有重要的现实意义。

To judge the validity of a futures market mainly depend on if the risk of the actuals market can transfer to the futures market.

衡量一个期货市场的有效性主要就是通过观察现货市场的风险能否有效地转移到期货市场来界定的。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。