查询词典 nitrogen-free

Grain-forage maize and ensilage maize cultivars were used in this article,and the silage production characteristics of those two cultivars in different nitrogen treatments were studied systematically.

文章以粮饲兼用和青贮专用玉米品种为材料，对不同氮肥运筹下玉米饲用栽培的物质生产特性进行了系统研究。

Objective To investigate Ephedra genomic DNA transformation into yeasts by nitrogen ion implantation with the sole object of ephedrine products.

目的以麻黄碱为目标产物，探讨氮离子注入介导麻黄基因组DNA在酵母菌中的转化。

With the system pressure dropped,the nitrogen adsorption equilibrium constant of the activated carbon increased.

随反应体系压力的下降，所得活性炭对氮气的吸附平衡常数增大。

The treatment of cervical erosion:(1) electric iron therapy: the use of high-frequency current erosive burning face, good curative effect, simple operation, low recurrence rate (2) liquid nitrogen cryotherapy: pain, less bleeding, a high rate of fetal more (3) laser treatment: the use of laser erosion organizations so that charring eschar.

宫颈糜烂的治疗：(1)电熨治疗：利用高频电流烧灼糜烂面，疗效好，操作简单，复发率低(2)液氮冷冻疗法：无痛，出血少，一次胎愈率高(3)激光治疗：采用激光使糜烂组织炭化结痂。

Second cervical erosion treatment: 1, electric iron therapy: the use of high-frequency current erosive burning face, good curative effect, simple operation, low recurrence rate. 2, liquid nitrogen cryotherapy: Making frozen lesions, necrosis, loss, no pain, less bleeding, a high cure rate, 3, laser treatment: so rotten to the core organization carbonized eschar.

二度宫颈糜烂的治疗：1、电熨治疗：利用高频电流烧灼糜烂面，疗效好，操作简单，复发率低。2、液氮冷冻疗法：使病变组织冷冻、坏死、脱落、无痛苦、出血少、一次治愈率高，3、激光治疗：使糜烂组织炭化结痂。

The structures were then overlaid using the nitrogen, the neighboring hydrogen, and the oxygen of the ethanolamine functionality.

结构随后用乙醇胺功能度的氮，临近的氢和氧覆盖。

Triethylamine and ethyl ether were freshly distilled in nitrogen over potassium before use.

对于 三乙胺和乙醚的蒸馏提纯，是在氮气的保护下进行操作的，烧瓶中，加入乙醚，用氮气保护，置换体系中的空气，然后加入K，回流。

Any of a group of organic compounds of nitrogen, such as ethylamine, C2H5NH2, that may be considered ammonia derivatives in which one or more hydrogen atoms have been replaced by a hydrocarbon radical.

胺一组被认为是氨之衍生物的含氮有机化合物中一种，如乙胺，c2h5nh2，其中一个或一个以上的氢原子被烃基所取代

Thus, there could be some ethylene oxide in the nitrogen supply line during the backfilling step.

很明显管路中残留的环氧乙烷会在进行氮气回填的时候进入箱体，这时不可接受的。

Thus, there could be some ethylene oxide in the nitrogen supply line during the backfilling step. Obviously

很明显管路中残留的环氧乙烷会在进行氮气回填的时候进入箱体，这时不可接受的。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。