查询词典 nitrogen

The factors included the type of extractant, the amount and the extraction times, the type of purified column, the type and dosage of eluviatant about the pre-treatment of the samples. The extraction was 3 minutes (13500rpm) of high speed homogenize extraction. 50mL acetonitrile as an extractant was acted on one time extraction. The florin silicon column was taken as the purified column. The extraction was eluted by 30ml 3:2 acetone - hexane and concentrated by nitrogen blowing under 50 °C water bath.The chromatographic separated conditions were studied applied the Agilent 6890 gas chromatographic apparatus and DB-17 capillary column(30m×0.25mm×0.25μm).

研究了提取剂种类、用量与提取次数，净化柱种类，淋洗剂种类与用量，提取方式与提取时间，柱温和柱流量等因素对油菜籽中有机磷农药残留提取、分离净化和色谱分离的影响，建立了采用高速匀浆提取方式提取3min13500rpm.min~(-1，以50mL乙腈为提取剂一次提取，以弗罗里硅柱为样品液净化柱，以30mL 3：2丙酮-正己烷为淋洗剂，在50℃水浴条件下用氮吹浓缩，气相色谱检测的油菜籽有机磷农药多种残留检测技术。

It provided a whole set of technical scheme and operating flow sheet for nitrogen and phosphorus removal and effluent up to standard.

城市污水厂工艺模型的发展，尤其是活性污泥模型的发展为污水厂工艺优化改造、工艺设计提供了一个很好的平台。

In order to improve this situation, we implanted applicable dosages of nitrogen and fluorine into the gate.

为了改善此情况，我们在闸极上布植适当剂量的氮、氟离子。

Despite of its central focuser, it is fully waterproof and nitrogen filled, and there also exists a rubberized version.

尽管是中心调焦，它还是充了氮并完全防水，它有个包胶版本。

This binocular is nitrogen filled, fully sealed with internal focuser, and specified to be submersible up to 3m.

这镜子内部充氮，完全密封的内部调焦，能耐3米深水。

Result: The optima technology was following: emulsifer in oil method was used to prepare foremilk, temp was 60 ℃, the micro emulsion was prepared by two-step high pressure homogen method with that the pressure was 80 Pa, 10 times, micropore film was used to sterilize, filling and sealing at the preservation of nitrogen.

以香叶油为模型药物，油中乳化法制备初乳，通过单因素考察优化制备工艺，采用星点设计-效应面法(central composite design-response surface methodology，CCD-RSM)对处方进行优化，并对其稳定性进行初步研究。

The carbohydrate,fats,protein and amino acid content before and after leather corrosion was analyzed with the following methods:the anthrone color method and the potassium ferricyanide law,the benzine,the Kjeldahl nitrogen determination and the salicylic acid color method,the sole indicator formol titration method.

为了弄清楚霉菌对皮革侵蚀前后，皮革成分变化及其霉菌产生危害的机理，利用蒽酮比色法、石油醚萃取法、凯氏定氮法与水杨酸比色法、甲醛滴定法，分别对侵蚀前后的皮革样品中糖、脂肪、蛋白质和游离氨基酸含量进行了分析。

The tire which mainly produces various model number dismantles to pack the instrument,nitrogen spirit of the machine,equilibrium machine,size vulcanized machine,four-wheeler fixed position machine and raise to rise machine,steel turn to change 20 remainings,such as,a machine,equilibrium crankshaft,and etc.s to grow a product,Make great effort unremittingly through several decades,the product not only occupied a local market but also sell as far as Thailand,South Korea,Russia etc.country.

主要生产各种型号的轮胎拆装机、平衡机、大小硫化机、四轮定位仪、氮气机、举升机、钢圈换顶机、平衡机轴等二十余种产品。经过几十年的不懈努力，产品不仅占有了国内市场还远销泰国、南韩、俄罗斯等国。

Using rice-wheat rotation system as studied objective, to study the effect of free air CO2 enrichment on soil microorganism, to probe the response and adaptation ability of soil microorganism to future global change, and to expound the relationship with soil carbon and nitrogen transformation.

研究农田自由大气CO2浓度升高对土壤微生物的影响，探讨土壤微生物对未来全球变化的响应及适应能力，并阐明与土壤碳和氮转化的关系。

The greatest amount of BNF by free-living nitrogen-fixing organisms may be in the flood waters of paddy rice production.

自生型固氮微生物进行的生物固氮量最大的可能是在淹水的水稻田里。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。