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Chlorine ion ; chemical oxygen demand ; low concentration ; potassium dichromate method

氯离子;化学需氧量;低浓度;重铬酸钾法

Integrated research has been done on the fluorescent powder from rare earth, then a new type of blue fluorescent chlorophosphate powder was synthesized.

针对目前普遍使用的铝酸盐体系的稀土蓝色荧光粉在性能和工艺上的研究尚存的问题,对稀土蓝粉进行了综合技术研究,制备了一种稀土氯磷酸盐体系的蓝色荧光粉。

Potentially harmful side effects of clobetasol propionate, can include stretch marks, thinning skin and dilution of tiny blood vessels.

潜在的有害副作用丙酸氯倍他索,可以包括延伸标记,变薄的皮肤和稀释的微小血管。

Actually, Super zinc no toxic ,no harmful itself ,no prussic acid ,benzene ,toluene , ketone, and some other affecting component ,lower voc, no rubbish will happened after using, so this can be more friendly to the environment .

强力锌本身无毒无害,不含异氰酸物、苯、甲苯、酮、氯代烃等不良组份。低VOC,施工不产生液体、固体废弃物,是对环境更友好的锌防护产品。

By using a mixture of aromatic hydrocarbon and water as a binary solvent,reaction of pyrogallol with PhCCl 3 was carried out in the presence of a catalyst(ZnCl 2?AlCl 3 or SOCl 2).2,3,4-Trihydroxybenzophenone was obtained in yields of 80%-87% with the advantages of easy control,stable yield,high product quality and low cost.

以焦性没食子酸为起始原料,在惰性气体保护和催化剂(ZnCl2、AlCl3或SOCl2)的存在下,在芳香烃与水组成的二元混合溶剂中,与三氯甲苯反应,经过芳香烃溶剂的后处理,可以得到2,3,4-三羟基二苯酮,产率最高达87%。

The number density of gold nanoparticles increased in sequence along with the increase of the molar ratio of HAuCl〓/C〓-pyrrolidine, while their size distributions were similar in each of the samples.

随氯金酸/C〓吡咯烷化学剂量比的增加,在富勒烯纳米聚集体上分布的金纳米粒子的数目增加,而金纳米粒子平均直径几乎保持不变。

All patients preoperatively received diclofenac 100 mg rectally and those undergoing hernia repair had a postoperative ilioinguinal-iliohypogastric nerve block done.

所有的病人在术前经直肠给予双氯辬酸100mg,妯tilde;?實otilde;疝气修补的病人行髂腦otilde;下神经阻滞。

A new method for synthesizing rosin allyl alcohol ester was studied. p-Toluenesulfonic acid allyl alcohol ester was first synthesized by O-acylation of allyl alcohol with p-toluene sulfonyl chloride, using NaOH as catalyst. Then rosin allyl alcohol ester was synthesized from sodium resinate and p-toluenesulfonic acid allyl alcohol ester.

探索了一种两步合成松香烯丙醇酯的新方法,即先以烯丙醇和时甲苯磺酰氯为原料,以NaOH为催化剂,通过O-酰化反应合成中间体对甲笨磺酸烯丙醇酯,再与松香钠皂发生亲核取代反应合成目标产物松香烯丙醇酯。

Respectively use chelex 100 resinate,boiling extraction,proteinase K digest/isopropanol precipitation,proteinase K digest/phenol/chloroformextra ction,alkaline lysis,guanidine thiocyanate lysis,guanidine hydrochloride lysis,spin column method to extract Mycobacterium tuberculosis DNA for multiplepolymerase chain eraction.

选择3份含结核分枝杆菌分别为4.325×103、6.857×104、5.356×105 Copies/ml的痰液,分别用Chelex 100树脂法、煮沸法、蛋白酶K消化异丙醇沉淀法、蛋白酶K消化酚/氯仿抽提法、碱裂解法、异硫氰酸胍裂解法、盐酸胍裂解法、离心柱法抽提结核分枝杆菌DNA作多重聚合酶链反应,显色法芯片检测结核分枝杆菌RFP和INH耐药基因。

Penoxsulam is ramping up well, the aminopyralid launch has been excellent, we're on target for our pyroxsulam project RTO in 2007 - and we made good progress on our goals of aggressive transition to our proprietary traits in corn.

比如:除草剂五氟磺草胺的市场效应表现良好,而氯氨吡啶酸这种除草剂在投入市场后,也反应热烈。在2007年度目标里,我们集中开发项目产品:蓄热式氧化器;而且,在专利谷物的快速转型目标中,我们也向前迈出了一大步。

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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。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。