查询词典 chemical

Because of my science is the Chemical Engineering and Technology, I was in charge of the ammonia process.

因为本人的本科学的是化学工程与工艺，所以本人在合成氨部的主要工作是负责合成氨的工艺流程。

When the role ratio was high, and the osmosis preferable, the removal rate of total phosphor, ammoniac nitrogen, and chemical oxygen demand were high, and reduced with the prolonged time.

当基质渗透性较好、孔隙率较高时，污水总磷、氨氮、以及化学需氧量去除率较高；随时间延长，各指标去除率降低，其中总磷去除率与时间有较好的线性相关。

In accordance with the principle of chemical dynamics, a new evaluation method for rate of ammonification of urea was established, and the type of reaction of ammonification of urea was confirmed.

根据化学反应动力学原理，建立了尿素氨化速度的评价方法，确定了尿素氨化反应的级数，测定了普通尿素、缓释尿素在特定条件下的氨化反应常数和半衰期，并依此评价了涂层缓释尿素的缓释性能。

The change of remaining litter weight was the largest in the earlier 30 days during 60-day litter decomposition, and there was no significant difference in subsequent 30 days. The phenolic acid content of litter was significantly reduced with the decomposition time prolonging, and the releasing quantity of phenolic acid was the highest at the tenth day. The amounts of soil Aerobic azotobacter, Ammonifier and Aerobic cellulose-decomposer and the soil chemical properties such as pH, phenolic acid content, NH+4-N and available phosphorus were significantly affected by the litter aqueous extract of four decomposition stages.

凋落物分解的60d中，凋落物残留量在前30d内变化最大，30d后无显著变化；凋落物中酚酸含量随分解时间的延长，呈显著降低的趋势，且在分解10d时，酚酸释放量最大。4个分解动态的凋落物浸提液显著地改变了土壤好气性自生固氮菌、氨化细菌、好气性纤维素分解菌的数量和土壤pH值、酚酸含量、铵态氮、有效磷等化学性质。

The phenolic acid content of litter was significantly reduced with the decomposition time prolonging, and the releasing quantity of phenolic acid was the highest at the tenth day. The amounts of soil Aerobic azotobacter, Ammonifier and Aerobic cellulose-decomposer and the soil chemical properties such as pH, phenolic acid content, NH+4-N and available phosphorus were significantly affected by the litter aqueous extract of four decomposition stages.

凋落物分解的60 d中，凋落物残留量在前30 d内变化最大，30 d后无显著变化；凋落物中酚酸含量随分解时间的延长，呈显著降低的趋势，且在分解10 d时，酚酸释放量最大。4个分解动态的凋落物浸提液显著地改变了土壤好气性自生固氮菌、氨化细菌、好气性纤维素分解菌的数量和土壤pH值、酚酸含量、铵态氮、有效磷等化学性质。

And HA hot chemical treatment agent is a reaction system mainly composed of nitrite and ammonium chloride.

HA热化学处理剂是以亚硝酸盐和铵盐为基础的反应体系，反应后能放出大量的热能和气体。

CHEMICAL ANALYSIS OF AMMONIUM NITRATE FOR TECHNICAL USE.

NF T20-581-1965 工业硝酸铵的化学分析。

Its main products are high efficiency compound fertilizer ammonium phosphate, sulphate chemical products, cement and bromine-, but the use of raw materials are generally from the fertilizer factory waste and ordinary sea water.

它的主要产品是高效复合肥磷铵，化工制品硫酸、溴素以及水泥等，但使用的原料却是一般化肥厂排出的废料和普通的海水。

Key word :wastewater treatment;magnesium ammonium phosphate;chemical precopitation;removal of ammonium and phosphate

向含NH4+和PO43-的废水中添加镁盐，发生的主要化学反应如下

Lubei Chemical (600727, the closing price of 4.89 yuan) of the Securities Department staff said that the company produces ammonium phosphate, sulfuric acid, cement and other products, as the national economic slowdown, the company has reduced The ex-factory price of the product, but the company has not lowered prices of raw materials, the company's profits by a certain amount of pressure.

鲁北化工（600727，在4.89元的收盘价的证券部工作人员）说，该公司生产的磷铵，硫酸，水泥等产品，作为国家经济放缓，公司降低了出厂产品的价格，但该公司没有降低原材料价格，由一定的压力，该公司的利润。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。