一酸的

A monomer, trithiocarbonate anion is successfully"immobilized"onto the polymeric support by reaction of CS〓 with strong-base quaternary ammonium in anion exchange resin with OH〓 form.

研究了把CS〓离子固定到阴离子交换树脂上，以及它在CS〓悬浮体系中和另一单体，α，α'-二溴代二羧酸甲酯在阴离子树脂表面上进行的亲核取代反应。

A salt of tungstic acid .

高氯酸形成的一种盐。

A salt of tungstic acid .

一种酸，因其形成的盐和酯而为人所知。

A salt of tungstic acid .

一种水溶性弱酸，氰胺盐的母酸。

A salt of tungstic acid .

一种由砷酸铜和醋酸铜形成的有毒复盐。

Only leaving traces of sourness and uncomfort inside

只留下一片隐忍的酸涩。

The experimental results suggested that there were some rules during the fermentation as follows: pit temperature increased rapidly and then dropped at the beginning of the fermentation and kept stable eventually at 20～22 ℃; there was slight change in yellow water pH value at first and then pH value decreased gradually in middle fermentation stage and finally kept stable; the change rules of total acids of yellow water were opposite to pH change rules; the reducing sugar of yellow water increased at first and then dropped and kept stable eventually; there was almost no change in alcohol content of yellow water in prior fermentation period, and then it increased rapidly and dropped slowly and finally kept stable; gas production rate was as high as 550 L/d within the first week in fermentation and then dropped undulatingly and changed to zero or even negative gas production rate.

窖池温度在发酵前几天迅速升高，然后下降，最后趋于稳定，保持在20～22 ℃；黄水pH开始变化不大，中间逐渐下降，最后趋于稳定；黄水的总酸变化与pH相反；黄水中还原糖先升高后下降，最后基本保持稳定；黄水中酒精含量在发酵前期变化不大，后期先是迅速升高，然后缓慢下降，最后趋于稳定；在发酵前期一周内，产气量很大，最高达550 L/d；之后产气量呈波动式下降并逐渐平稳，最后趋于零甚至负产气量。

Objective: To establish a simple, rapid, accurate method for the determination of uronic acid and neutral sugar in acidic polysaccharides.

目的：建立一种操作简单、快速、准确地测定酸性多糖中糖醛酸和中性糖含量的方法。

Objective: To establish a simple, rapid, accurate method for the determination of uronic acid and neutral sugar in acidic polysaccharides.

摘 要：目的：建立一种操作简单、快速、准确地测定酸性多糖中糖醛酸和中性糖含量的方法。

The endoscopic treatment on mature verrucous gastritis is safe effective and reliable method.

射频结合抗酸及黏膜保护剂治疗成熟型疣状胃炎是一种安全有效的方法，其疗效优于常规疗法

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。