查询词典 nitrogen-free

The strain can grow on the carbon source glucose or soluble starch and the nitrogen source peptone or soybean powder, but not on the inorganic nitrogen source ammonium chloride or ammonium sulfate.

该菌株能利用碳源葡萄糖和可溶性淀粉；能利用氮源蛋白胨，黄豆粉等，不能利用无机氮源NH_4Cl和(NH_4)_2SO_4。

And the hydrogen production reach 94.69 ml/ while temperture:37℃, starting pH: 6.0, material concentration:30g/L,digested sludge concentration ^.5 g/L and peptone was taken as organic nitrogen while ammonium chloride as abio-nitrogen.

原料秸秆经过处理后，在温度37℃，初始pH 值6.0，底物浓度30g/L，污泥浓度27.5g/L，以蛋白胨为有机氮源，NH_4Cl 为无机氮源条件下的产氢能力为94.69ml/。

I plant specializing in the production of carbon dioxide gas, nitrogen, hydrogen, oxygen, torch gas, nitrogen, vinyl chloride, propylene gas, liquefied petroleum gas, natural gas, liquefied petroleum gas, ammonia, sulfur dioxide and other processes of the compressor.

我厂专业生产二氧化碳、煤气、氮氢气、氧气、火炬气、氮气、氯乙烯、丙烯气、石油气、天然气、液化气、氨气、二氧化硫等工艺性压缩机。

The best circumstance of the treating techniques of the acidified raw material is, temperture:37℃, starting pH: 7.0, material concentration:40g/L,digested sludge concentration ^.5 g/L and corn plasm was taken as organic nitrogen while ammonium chloride as abio-nitrogen.

同时对厌氧发酵生物产氢过程进行了试验研究，优化了产氢条件，其最适厌氧发酵产氢的工艺条件为，温度37℃，初始pH 值7.0，底物浓度40g/L，污泥浓度27.5g/L，以玉米浆为有机氮源，NH4Cl 为无机氮源。

In the reforming cryopreserving method, the fetal liver tissues were permeated and equilibnzed in cryoprotectant A and B for 20 minutes, respectively, and then put into liquid nitrogen quickly after cold equilibrium at liquid nitrogen steam for 5 minutes.

改良冻存法：胎肝组织在A液、B液中分别渗透平衡20min后，在冷冻保护液B液中经液氮蒸汽冷平衡5min后迅速入液氮冻存，1周后复苏，入DMEM培养液37℃孵育1h，胶原酶消化胎肝组织，分离、收集消化后的胎肝细胞培养观察。

The article introduces the thermal decomposition kinetics of potassium oxalate-hydrogen peroxide in nitrogen, using the programmed temperature method and NETZSCH STA409 PC/PG Comprehensive Thermal Analyzer, measures the sample's TG and DSC curves in the condition of different heating rates in nitrogen, and analyses the kinetics model of thermal decomposition by the multiple nonlinear regression.

利用程序升温法在NETZSCH STA409 PC/PG综合热分析仪上研究了草酸钾－过氧化氢在氮气氛围中的热分解动力学，测定了样品在氮气中不同升温速率下的TG和DSC曲线，采用多元非线性回归对其热分解动力学模型进行了筛选研究。

Water-soluble nitrogen, amino acids,total volatile basic nitrogen,peroxide value, vitamin C consumption and KMnO4 consumption were detected, no significant changes were observed except the color which was light brown on the s.

检测了肫片辐照前后的感官性状、水溶性含氮物、游离氨基酸、挥发性盐基总氮、过氧化值、抗坏血酸消耗量和KMnO4消耗量，除肫片表面发生轻微褐变之外，未发现辐照对上述各项指标有显著性影响，证实了辐照处理肫片用于提高卫生质量和延长保质期是可行的。

It was not helpful for the growth and nitrogen utiliz ation rate of maize when urea reduced by 30% and combined with compound nitrogen fertilizer synergists.

尿素减量达30%时，配施复合氮肥增效剂对玉米植株生长和氮素吸收利用明显不利。

As a result,treated with urea decreased by 15% and combined with appropriate dosage of compound nitrogen fertilizer synergists(20% of urea),the growth and yield of maize had litter effect and higher the uptake and utilization of nitrogen.

尿素与20%施氮量的复合氮肥增效剂配施，不影响玉米植株生长和单季产量，能提高玉米氮素利用率，节省氮肥投入达15%。

The pH value of silages was all lower than 4.0 and the ratio of ammonia nitrogen to total nitrogen was all lower than 5.0, which improved the quality that all the silages in experiment were good.

经不同切碎方式的各组青贮饲料的有机酸含量均无显著差异（P〉0.05），pH值均在4.0以下，而且氨态氮与总氮的质量比也均在5.0以下，达到了优质青贮饲料的标准，虽然各青贮饲料的粗蛋白、粗灰分和可溶性碳水化合物含量有显著差异（P〈0.05），但均为优质的青贮饲料。

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。