硫酸

Through the review of hydrochloric acid, sulfuric acid, the chemical nature of the general out of the common gender , both to enable students to understand the process of awareness of things, but also cultivate their comparison,...

通过复习盐酸、稀硫酸的化学性质概括出酸的通性，既让学生了解人们认识事物的过程，又培养了他们的比较、。。。

Both these mechanisms mean that sulphate has a cooling effect.

这两种机制意味着硫酸具有冷却温室效应。

An odor of copperas issued in puffs from the roofs of the neighboring factory.

阵阵硫酸化合物的气味从附近一家工厂的房顶上冒出来。

After completion of laconic epistolary compositions she abandoned the implement of calligraphy in the encaustic pigment, exposed to the corrosive action of copperas, green vitriol and nutgall.

写完一篇书简体短文后，她就把书写用具丢在蜡画颜料里，任其暴露在硫酸亚铁、绿矾和五倍子中去腐蚀。

The former mainly have collagen, coralline, aminoglucasan, chondro-itin-sulfate and fibrin glue.

天然材料主要有胶原、珊瑚、氨基葡聚糖、硫酸软骨素、纤维蛋白凝胶等。

And sulfates are known to corrode metals.

已知硫酸和硫酸盐能腐蚀金属。

Sulfuric acid, which is much stronger, is so corrosive that it is seriously damaging to the human skin.

硫酸则是强得多的酸，具有很大的腐蚀性，会严重损伤人的皮肤。

The results of study showed that, the proportion of cotton seed cake could account for 30% in the mixed feed of fish for Cyprinus carp and Ctenopharyngodon idellus, and could reach 50% for Tilapia nilotica.

试验表明，在鲤鱼、草鱼的饲料中，棉籽饼可达30％、尼罗非鲫的可达50％，前者若用0.5％的硫酸亚铁溶液去毒处理，其养鱼效果优于未去毒的，后者可直接饲喂。

The steps for preparing insecticide include: first shaking flask for fermentation, adding amidon, soya bean cake powder, cotton cake powder, protease leather, yeast powder, maize milk, magnesium sulfate heptahydrate, monobasic potassium phosphate, dibasic potassium phosphate, calcium carbonate alpha-amylase and make-up water by ratio in culture medium with 100 unit volumes; secondarily filling 100ml culture mediums in triangular bottle, then seeding BTH-13 after disinfection and culturing them until the brood-cell pulls off under finite temperature; third adopting the selected culture medium and fermenting them in full-automatic fermentation tank, acidifying the fermentation liquor after the fermentation, adding the emulsifier, and directly performing spray-drying after the compression of the fermentation liquor to prepare the wettable powder.

制备杀虫剂的步骤是：首先是摇瓶发酵，在100单位体积的培养基中，按比例加入淀粉、豆饼粉、棉饼子粉、蛋白胨、酵母粉、玉米浆、七水硫酸镁、磷酸二氢钾、磷酸氢二钾、碳酸钙、及α-淀粉酶，补充水；其次是在三角瓶中装100ml培养基，灭菌后接种BTH-13，在一定温度培养至芽孢脱落；第三是采用筛选出来的培养基，在全自动发酵罐中进行发酵，发酵结束后发酵液酸化，加入乳化剂，酵液浓缩后直接喷雾干燥制备可湿性粉剂。

Biodiesel was prepared by esterification of cottonseed oil crude fatty acids with methanol and with sulfuric acid as catalyst.

使用浓硫酸催化棉油毛酸与甲醇的酯化反应制备脂肪酸甲酯即生物柴油。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷