查询词典 sulphuric acid

The results show that the BST is a nice nitrogenous fertilizer resources and to some extents,equal and superior to traditional nitrogenous fertilizer urea and sulphuric acid ammonia.

结果表明，BST是很好的氮肥资源，等同于或某种程度上优于尿素和硫酸铵。对土壤的理化性质、氨态氮、硝态氮含量以及对作物吸收Ca，Mg，K等养分和生长发育的影响与常规氮肥相似。

Adding freshly prepared iron sulphate solution to sample solution, then carefully adding concentrated sulphuric acid.

把新鲜配制的硫酸铁溶液加入样本溶液中，再小心地加入浓硫酸。一会后

For water containing serious industrial contaminants, like that at Lampoldshausen, they use iron sulphate as the catalyst and add a small amount of hydrogen peroxide and sulphuric acid to assist the process.

像Lampoldshausen等地，由于水中含有危险的工业污染物，他们使用硫酸铁作为催化剂，并添加少量的过氧化氢和硫酸协助净化过程。

The soil is inhospitable, similar to that in parts of Rio Tinto in southern Spain, where water bubbles up through iron sulphide deposits, forming sulphuric acid that dries into an acidic mud over the long, dry summer.

那里有如同西班牙南部Rio Tinno的土质，并不适合人类居住，那里的水在黄铁矿石中沸腾并形成硫酸，经过漫长的夏季，风干后形成酸泥浆。

The results show that in the 1.0 mol/L sulphuric acid solution, the rates of swelling and breakage of emulsion liquid membrane decline and the extraction efficiency is 99.4%.

结果表明：在1.0 mol/L的硫酸含铬废液中，该体系具有良好的稳定性，液膜的溶胀率以及破损率明显降低，Cr的萃取率高达99.4%。

Place 5 ml in a test-tube immersed in iced water, add 0.4 ml of a 100 g/l solution of potassium chloride R, 0.1 ml of diphenylamine solution R and, dropwise with shaking, 5 ml of nitrogen-free sulphuric acid R.

硝酸盐：取本品5ml置试管中，于冰浴中冷却，加100g/l氯化钾溶液0.4ml与0.1%二苯胺溶液0.1ml，边摇边滴加无氮的硫酸5ml，摇匀，将试管于50℃水浴中放置15分钟，溶液产生的蓝色与标准硝酸盐溶液(2 ppm NO3)0.5ml，加无硝酸盐的水4.5ml，在同一时间用同一方法处理后的颜色比较，不得更深。

Treatment with sulphuric acid leaves metallic copper as a residue and disolves out iron, cobalt, and nickel as the sulphates.

用硫酸处理析出金属铜，并溶出含有铁、钴、镍的硫酸盐。加入石灰沉淀出铁；加入次氯酸钠沉淀，形成钴的羟化物。

The weight loss,tensile strength and wettability of treated silica glass fibers were compared and the way of washing the silica glass fibers with 30% sulphuric acid was chosen.Al2O3 coating silica glass fibers was prepared by solgel technology.

首先采用三种处理方法除去石英纤维表面的有机层，比较了处理前后石英纤维的失重、拉伸强度和浸润性变化，最终优选出30%硫酸洗涤的方法对石英纤维表面进行处理。

PS alkali lignin sulfonate is a new type of surfactant, which is extracted and purified from waste liquid of paper-making by adding phenol and aldehyde and sulphuric acid at high temperature.

PS碱木素磺酸盐是由造纸废液经浓缩加入酚、醛和硫酸等在高温下复配或反应后提炼出的 1种新型表面活性剂。

Carry out the test for total organic carbon (2.2.44) with a limit of 0.5 mg/l or alternatively the following test for oxidisable substances: to 100 ml add 10 ml of dilute sulphuric acid R and 0.1 ml of 0.02 M potassium permanganate and boil for 5 min; the solution remains faintly pink.

我怎么觉得这个英文的问题很大啊，是缺少内容了吗？

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。