1·So he and his colleagues tested a range of chemicals found in fertilizers, including nitrate, ammonium and urea, to determine their effects on the algae.
他和同事们研究了肥料中的一系列化学物质，包括硝酸盐，铵和尿素，观察他们对海藻的影响。
2·The uranium is then dissolved from the beads using a solution of ammonium carbonate and precipitated as "yellow cake", a mixture of uranium oxides.
接下来，小珠子里头的铀离子会被碳酸铵溶液溶解，其后沉淀，析出“黄饼”，即铀的氧化混合物。
3·Common mixtures include sodium citrates, sodium borohydride (also used to bleach wood pulp) and ammonium compounds, all of which can be toxic to humans and the environment.
一般的混合物包括柠檬酸钠，硼氢化钠(其也用于漂白木浆)和铵类化合物，所有的这些物质都对人体和环境有着危害。
4·Experiments on adsorption of ammonium ion to fibers were carried out by two methods.
对铵离子吸附到纤维的实验进行了两种方法。
5·Elaborate the action of product cost and the way that reduce cost of saltpetre ammonium product.
阐述产品成本的作用和降低硝铵产品成本的途径。