查询词典 alkali

Its photocatalytic behaviors for degradation of fruit green dye, alkali yellow dye and brilliant blue dye, were investigated. The effects of catalyst dosage, illumination time and presence of air on the decoloring efficiency for the three dyes were investigated.

研究了其对果绿、碱性黄和亮蓝溶液的光催化降解性能，考察了光催化剂用量、光照时间及空气的存在对三种染料降解脱色率的影响。

The initial pH of reaction solution had little influence to the degradationefficiency, but in alkali solution, methylene blue degraded easier than in acid or neutral solution.

亚甲基蓝降解率随超声时间的增加而增加；溶液的pH值的变化对亚甲基蓝降解的影响不大，但是在中性溶液中，其降解率稍高于酸性或碱性溶液中。

Character: light blue transparent alkali water-soluble liquid with lemon smell, PH 13

性状：淡蓝色透明柠檬气味碱性水溶性液体。

Viscose manufacturing process involves the reaction of cellulose with sodium hydroxide to form an alkali cellulose.

粘胶的生产过程包括纤维素与氢氧化钠反应形成碱纤维素的过程。

Treatment of purified wood pulp with 18% sodium hydroxide solution produces alkali cellulose.

用18%氢氧化钠溶液处理纯化木浆生产出碱性纤维素。

It indicated chemistry reaction occurred between cellulose and alkali and got alkaline cellulose.

碱与纤维素作用时，纤维素会发生化学作用生成新的化合物——碱纤维素；纤维素会发生物理化学作

The result shows that the structure and property of alkali cellulose and PAC is hardly dependent on the organic solvent in the manufacturing process.

同时借助1H-NMR、化学滴定法表征了不同介质中纤维素羧甲基化产物大分子的一级结构。

The result showed that aging time of alkali cellulose should he 60℃, the preparation condition optimized of 3-ureido-2-hydroxypropyl cellulose should be the temperature of reaction at 60℃, reaction time 3.5-4h, the mass ratio of intermediate to cellulose should be 5, NaOH concentration should be 1 mol/L.

结果表明：棉纤维的老化时间为10 h，3-脲基－2-羟基丙基纤维素的制备工艺条件以温度60℃，m（3-氯－2-羟丙基脲）／m＝5，反应时间3.5~4 h，氢氧化钠的浓度以1 mol/L为宜。

The alkali cellulose is then treated with carbon disulfide to form cellulose xanthate.

碱纤维素再经二硫化碳处理制成纤维素磺酸酯。

When alkali cellulose is reacted with the sodium salt of chloroacetic acid, the sodium salt of the carboxymethyl ether (cellulose-O-CH2-CO2-Na+) is formed.

当碱性纤维素与盐酸的钠盐反应，羧甲基醚钠盐生成。

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