氢氧化钠

Cotton cloth is generally scoured with a delute solution of sodium hydroxide (lto 3 percent, based on the weight of the cloth).

棉织物一般在浓度较低的氢氧化钠溶液中煮练(浓度为1%-3%，浓度的大小取决于织物的重量)。

Place the funnel with the filter paper and the precipitate in the neck of a 50mL volumetric flask.

将置有滤纸和沉淀物的漏斗置于50ml容量瓶瓶颈处，使用EDTA饱和的20％的氢氧化钠溶液清洗，然后使用蒸馏水清洗并定容。

Place the funnel with the filter paper and the precipitate in the neck of a 50mL volumetric flask. Dissolve the precipitate by washing the paper with 20% sodium hydroxide solution saturated with EDTA.

将置有滤纸和沉淀物的漏斗置于50ml容量瓶瓶颈处，使用EDTA饱和的20％的氢氧化钠溶液清洗，然后使用蒸馏水清洗并定容。

The second step is carried out by treating the bleached pulp obtained from the first step, with a solution of sodium hydroxide and hydrogen peroxide.

通过用氢氧化钠和过氧化氢的溶液处理第一步中获得的漂白纸浆而进行第二步。

The effects of reaction conditions on the bleaching of epoxidized soybean oil with hydrogen peroxide in alkaline medium were studied in terms of the dosage of hydrogen peroxide and sodium hydroxide, reaction temperature and reaction time.

研究在碱性介质下过氧化氢对环氧大豆油的脱色工艺，考察了过氧化氢和氢氧化钠用量、反应温度、反应时间等因素对脱色工艺的影响。

The experimental results showed that the optimized parameters for isolation of hemicellulose was: 2% hydrogen peroxide, 2% sodium hydroxide, heating time 4h, reaction temperature 75℃.

结果表明，半纤维素分离提取的优化参数为：2%过氧化氢，2%氢氧化钠，加热时间4h，反应温度75℃。

The company was established in 2001, covers an area of 16,000 square meters, are set production, sale and service of professional manufacturers, professional production·, chemical pure, pure electronics, industrial pure content specifications such as sulfuric acid, nitric acid, hydrochloric acid, sodium hydroxide, hydrogen peroxide, ammonia and other chemical raw materials and chemical reagents, as well as multi-layer circuit boards, flexible circuits board, semiconductor, electronic plating, chemical plating, wastewater treatment and a variety of electronic device manufacturers to provide supporting services.

公司成立于2001年，占地面积16000平方米，是集生产、销售、服务于一体的专业型厂商，专业生产分析纯、化学纯、电子纯、工业纯等各种规格含量的硫酸、硝酸、盐酸、氢氧化钠、双氧水、氨水等各种化工原料及化学试剂，并为多层电路板、软性电路板、半导体、电子电镀、化学电镀、废水处理及各种电子器件生产厂商提供配套服务。

The effects of reaction time, reaction temperature, amount of catalyst, and amount of sodium hydrate on the yield of epoxysuccinic acid were investigated.

考察了实验中影响环氧琥珀酸收率的主要因素，如反应时间、反应温度、催化剂用量及氢氧化钠用量。

By alkaline fusion of hydroxycaproic acid and its derivatives with sodium hydrate.

用氢氧化钠碱熔处理废碱液中的羟基己酸及其聚合物，可使废碱液中己二酸的质量分数由 3。

By alkaline fusion of hydroxycaproic acid and its derivatives with sodium hydrate.

用氢氧化钠碱熔处理废碱液中的羟基己酸及其聚合物，可使废碱液中己二酸的质量分数由 3.18%提高到8.74 %，且环境效益和经济效益显

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。