查询词典 phosphoric acid

The stereochemical effect of the chiral amino acid residues on the formation of penta-coordinate phosphorus intermolecular mixed carboxylic-phosphoric anhydride from N-phosphorylamino acids was studied with density functional theory calculations at B3LYP/6-311G level.

用密度泛函方法在B3LYP/6-311G水平上对N-磷酰化氨基酸生成五配位磷酸羧酸混酐反应中手性氨基酸残基侧链的立体化学效应进行了研究。

The 'acid' Bessemer process, as the Victorian ironmasters discovered , could not eliminate phosphor, which is harmful to steel, so low phosphoric pig irons had to be used.

维多利亚女王时代的铁器制造商发现，酸性贝塞麦工艺不能去除对钢有害的磷，所以必须用低磷生铁进行冶炼。

Phosphoric acid can also be used in the electron, medicine, foodstuff industry, and soon.

磷酸的最终用途由它的纯度决定，而磷酸的纯度一般又取决于它的生产方法及净化程度。

Just add a little 10% phosphoric acid (H3PO4) to the washing water first, 10 millilitres per gallon (2-3 mllitre), just to be on the safe side -- I don't want ANY lye floating around my fuel pump.

只需先加入少量10%H3PO4（每升水加入2-3 ml）到洗涤水中。这样做是为了安全起见－－－－我不想让我对油泵周围漂浮哪怕一丁点的碱。

It has streptomycin and dihydrostreptomycin crossing rate of 100 %, simple sample pre-treatment including water dilution of milk sample and extraction with buffering phosphoric acid solution and pH regulation of pork and kidney sample, fast detection, high detection sensitivity up to 11.2 microgram/L and other advantages, and may be used in detection of residual streptomycin and similar medicines in animal food products.

本发明的检测链霉素药物的酶联免疫试剂盒为多残留检测试剂盒，链霉素和双氢链霉素的交叉率为100％；对样品的前处理要求低，样品前处理过程简单，牛奶样品用水稀释后可直接测定，猪肉和肾脏经磷酸缓冲液抽提后调pH即可上样，并且能同时快速检测大批样品；测定方法简单，省时，牛奶样品在1小时之内可得出测定结果；最低检测限达11.2μg/L，具有高特异性、高灵敏度、高精确度、高准确度等特点，可在动物性食品链霉素药物残留检测中发挥重要作用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。