查询词典 nitrogen-free

According to these results, it is considered that in the matrix of gray cast iron nitrogen solid-solubilizes as interstitial atom in the octahedron interstice of ferrite and cementite which is not occupied by carbon atom, and causes the crystal lattice of ferrite and cementite to distort, so that the micro-hardness of the matrix increases.

依据这一实验结果，作者认为，在灰铸铁基体组织中，氮以间隙原子的方式固溶在铁素体和渗碳体中未被碳原子占据的八面体间隙里，造成铁素体和渗碳体晶格畸变，从而提高了基体组织的显微硬度。

The integrated factor and total nitrogen factor of invertase were extracted by principal components analysis.

主成分分析提取了转化酶综合因子和全氮因子。

In the study on the relation of wastewater concentration and nitrogen and phosphorus purifying effects of plant-hydroponic wastewater system with Ipomoea aquatica as hydroponic plant,3 concentrations(5%,10%,20%)of cesspool wastewater were set up and the TN,NH4+-N,fTN,PO43-P,fTP,CODCr and fCODCr were determined at 0,2,4,6,8 and 11 day resp.

在植物水培污水净化系统中对污水浓度与氮磷净化效果间的关系进行研究，蕹菜作为水培植物材料，对设置5%、10%、20%不同浓度的化粪池出口污水，分别于第0、2、4、6、8、11 d测定TN、NH4+-N、过滤后总氮、总磷、PO43-P、过滤后总磷、CODCr、过滤后COD。

In the study on the relation of wastewater concentration and nitrogen and phosphorus purifying effects of plant-hydroponic wastewater system with Ipomoea aquatica as hydroponic plant, 3 concentrations （5 %, 10 %,20 %） of cesspool wastewater were set up and the TN, NH4^＋-N, fTN, 19043 p, fTP, CODCr and fCODCr were determined at 0, 2,4,6,8 and 11 day resp.

在植物水培污水净化系统中对污水浓度与氮磷净化效果间的关系进行研究，蕹菜作为水培植物材料，对设置5％、10％、20％不同浓度的化粪池出口污水，分别于第0，2，4，4，6，8、11d测定TN、NH4^＋。N、过滤后总氮、总磷、PO4^3、过滤后总磷、CODCr、过滤后COD。

That's because solar ultraviolet light irreversibly breaks down methane in Titan's mostly nitrogen atmosphere.

这是因为太阳紫外线分解了泰坦以氮为主大气中的甲烷。

The results showed that there's clear negative correlation between the chemical components such as protein, total nitrogen and nicotine etc., and the sensory quality such as quality and concentration of aroma, offensive taste, irritancy, after taste and so on, but these chemical components and the sensory quality such as physiological strength an...

然而 ，烟叶化学成分是相当复杂的，目前在烟叶中已鉴定出的化学成分已超过 30 0 0种，因此，要直接分析烟叶化学成分与烟叶质量的关系是困难的。目前主要采用的方法是数理

Meanwhile,the factors which affected the drying were also analyzed including the flow rate of methyl chloride ,the content of isobutylene,the amount of regenerated nitrogen,the regeneration time,the discharging condition of methyl chloride remaining in tower before regeneration,the using time of Al_2O_3,and so on.

研究了丁基橡胶装置干燥塔的干燥、再生过程，对影响干燥效果的主要因素如氯甲烷流量、异丁烯含量、再生氮气量、再生时间、再生前塔内残留氯甲烷的排放程度、干燥剂Al_2O_3的使用时间等进行了分析。

By means of X-ray diffraction, nitrogen adsorption, UV-Vis diffuse reflectance, a successful isomorphous substitution of titanium in the silica framework of SBA-15 samples with Si/Ti = 50, 25, 20 has been proved, the substitution of Ti for Si does not change the highly ordered two-dimensional hexagonal mesostructure of SBA-15. Titanium is totally tetrahedral and highly dispersed.

通过X射线衍射、N2气吸附脱附、紫外—可见漫反射等表征手段，证明在Si/Ti＝50，25，20时，钛原子成功地取代了SBA-15中的硅原子而没有改变SBA-15高度有序的介孔二维六角结构，其中钛全部以四配位状态存在，而且高度分散。

The adsorption isotherm of nitrogen for ZSM-5 zeolite with Si/Al ratio of 110 is shown in Figure 1A.

氮气在Si/Al比为110的沸石上的吸附等温线如图1A所示。

Figure 5 Production Function for Nitrogen and Potash on Jute, Guangdong, 1986

图5 氮肥和钾肥对黄麻的生产函数

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。