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According to their phenotypes on the media containing only one of the three different nitrogen sources respectively,89.33% were identified as nitA, 9.33% were nit B and 1.33% nit C.

经不同氮源利用的鉴定，89 33%属于nitA ，9 33%属于nitB ，1 33%属于nitC ，其中nitC在以NaNO2 作为唯一氮源的MO2 培养基上被完全抑制致死。

Progress and key difficulties in the synthesis and characterization of carbon nitride crystals are summarized.

介绍了氮化碳晶体的合成与表征研究进展，分析了氮化碳晶体合成中存在的主要困难。

The article studies the influence of nitrogen content of nitrocellulose on the mechanical properties of the diazidonitrazapentane propellant.

利用我国现有的力学性能测试手段全面研究了硝化棉含氮量对叠氮硝胺发射药低温力学性能的影响。

Methods Thirey-two patients treated by a regimen of Dexamethasone, Nitrogen Mustard Defibrase and Chinese medicine were not complete remission yet. These patients in remission period were applied Chlorambucil to and observed the prognosis and the drug side reaction.

32例接受正规中西医结合"四联"疗法（地塞米松、盐酸氮芥、降纤酶、本院中药制剂）后病情仍有反复的患者，在原治疗基础上于病情缓解期口服苯丁酸氮芥，临床观察病情转归情况和服药后的副作用。

Nitrous Oxide: Nitrous oxide is about 300 times more potent as a global warming gas than carbon dioxide.

氧化亚氮：一氧化二氮大约是300倍，更有力的作为一个全球气候变暖的气体比二氧化碳。

The suitable carbon and nitrogen sources for the synthesis of thrombolytic enzyme were soluble starch and soybean peptone.

合成血栓溶解酶的合适碳、氮源分别是可溶性淀粉和大豆蛋白胨，合成γ-聚谷氨酸的合适碳、氮源分别是蔗糖和NH4Cl。

Photorespiratory rate and the ratio of photorespiration to photosynthesis were significantly different among the three types, but net photosynthetic rate was not significantly different with the mean of the whole growth period.

3种氮效率类型水稻全生育期的平均光呼吸速率和相对光呼吸存在极显著差异，但平均净光合速率在3种氮效率类型的水稻中差异不显著。

In the whole growth period, the genotype of high nitrogen use efficiency had low photorespiratory rate and the ratio of photorespiration to photosynthesis, while low nitrogen use efficiency had high photorespiratory rate and the ratio of photorespiration to photosynthesis.

从整个生育期看，氮利用效率高的水稻光呼吸速率较低，其相对光呼吸较小；氮利用效率低的水稻光呼吸速率较高，其相对光呼吸较大。

Effects of tillage systems and nitrogen applied amount on wheat growth and development and yield of wheat and maize 3.1 Effects of tillage systems and nitrogen applied amount on wheat growth and development In the second year of experiment, there was no significant difference in the wheat flag leaf photosynthesis rate, flag leaf senescence characteristics, photosynthate transferring amount, photosynthate transferring ratio and dry matter accumulation of between R, H and C.

3耕作模式与施氮量对小麦、玉米生长发育及产量的影响 3.1耕作模式与施氮量对小麦生长发育的影响在试验第二年，旋耕和耙耕模式在旗叶光合速率、旗叶衰老特性和光合产物转移量和转移率，以及干物质积累量上与常规耕作模式无显著差异。

This paper describes the determination of injection ribavirini by polarimetry,and it is compared with nitriding,the results indicate that this method is more simple,rapid and accurate.

采用旋光法测定三氮唑核苷注射液的含量，与河北药品标准 1 991年版采用的定氮法比较，方法简单，快捷，准确。

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。