查询词典 nitrate

Although effects of nitrogen fertilizer on nitrogen accumulation and nitrate reductase in tobacco leaf had been extensively studied, impacts of nitrogen fertilizer on flue-cured tobacco leaf nitrogen metabolism in dry land and paddy field were not well documented.

试验采用裂区设计，以硝态氮和铵态氮两种氮素形态为主处理、5个供氮水平为副处理，在大田条件下研究了水田与旱地烤烟在团棵、旺长、脚叶采烤、腰叶采烤和顶叶采烤等5个生育期烟叶的总氮浓度、硝酸还原酶和谷酰胺合成酶活性的氮肥效应。

They are hydrogen peroxide, ammonium persulfate, sodium persulfate, chlorinated polypropylene, chloridized EVA, garox mek, carbon dioxide, hydrogen, sodium carboxymethyl cellulose, carboxymethyl amylum sodium, feed additive, auric salt and silver salt series, tin salt series, tin dichloride, silver nitrate, fireworks raw materials, spheroid form nickel hydroxide, refined sulfuric acid, battery sulfuric acid, ultramicro fine powder, compound fertilizer, 40% multiple sulfur suspending agent, 40% sulfur-tricyclazole suspending agent, 40% sulfur-multiple-trideflocculant, 20% pemiro-dichlor suspending agent, high panniculus adiposus and so on.

主要产品有：过氧化氢、过硫酸铵、过硫酸钠、氯化聚丙烯、氯化EVA 、过氧化甲乙酮、二氧化碳、氢气、羧甲基纤维素钠、羧甲基淀粉钠、饲料添加剂、金、银盐系列、锡盐系列、氯化亚锡、硝酸银、烟花原料、球形氢氧化镍、精制硫酸、电池硫酸、超微细粉体、复合肥、40%多硫悬浮剂、40%硫·三环唑悬浮剂、40%硫·多·三悬浮剂、20%吡嘧·二氯悬浮剂、高脂膜等10个系列百多个品种、规格产品。

Contact of amonium nitrate in explosive with sulphide ore in high sulphur hot deposit tends to cause spontaneous combustion and detonation thre ate ning production safety. Addition of inhibitors into explosives may inhibit contact reaction.

高硫高温矿床中的硫化矿石与炸药中的硝酸铵接触容易引起自燃自爆，对安全生产带来威胁，而在炸药中加入抑制剂，可以抑制接触反应的进行。

And lower the pod shell soluble sugar content at the beginning of seed filling stage. The effect of nitrogen was different at different growth stages.3、Effect of nitrogen levels on soybean nitrogen metabolismNitrogen can increase nitrate reductase activity, and the effect was the most obvious in the peak period.

施氮可以提高开花期叶片淀粉含量，降低茎秆中可溶性糖含量，在成熟期降低叶片可溶糖含量，并在鼓粒始期降低荚皮可溶性糖含量。3、氮素水平对大豆氮代谢酶影响施氮可以提高硝酸还原酶的活性，且在酶活性峰值期作用效果最明显。

The average value of the total nitrogen,ammonium nitrogen,nitrate nitrogen,available nitrogen and organic nitrogen were 4591 mg/kg,12.66 mg/kg,1.8 mg/kg,26.25 mg/kg and 4598 mg/kg respectively.The forms of nitrogen that we concerned were decreased from plow layer to subsoil in five paddy soil profile.

土壤表层全氮、铵态氮(NH_4~-N)、硝态氮(NO_3~--N)、碱解氮、有机氮均匀含量分别为4591 mg/kg、12.66 mg/kg、1.8 mg/kg、26.25 mg/kg、4598 mg/kg，土壤表层各形态氮素的含量在剖面中的分布特征是从表层到底层呈下降趋势。

A 3-year-long field experiment was carried out to investigate the effects of nitrogen rate on nitrogen uptake and utilization of winter wheat and residual nitrate in soil under straw mulch.

通过田间定位试验研究秸秆覆盖条件下施氮量对小麦氮素吸收利用及土壤硝态氮残留的影响。

If it is other chemical components of the salts, we must speak to their specific trade names or chemical names, such as soda ash, baking soda, red alum, ammonium sulfate, potassium nitrate, potassium chloride, diammonium phosphate, etc., must can not be generally called "industrial salt" or "chemical salt."

如果是其他化学成分的盐类，一定要说出其特定的商品名称或化学名称，如纯碱、小苏打、红矾、硫酸铵、硝酸钾、氯化钾、磷酸氢二铵等，绝不能笼统叫&工业盐&或者&化工盐&。

Silver nitrate is a salt.

硝酸银是一种盐类化合物。

A silver salt, especially silver nitrate, used to sensitize ***.

银盐，硝酸银一种银酸盐，尤指硝酸银，用于使纸感光

Silver nitrate titration ; cyanide solution ; free sodium cyanide ; determination ; disturbance ; correction.

沈阳黄金学院；黄金， GOLD ，编辑部邮箱 1995年 02期银量法；氰化液；游离氰化钠；测定；干扰；校正

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。