查询词典 sulfur black

Microcrystalline cellulose was activated with NaOH solution, then its C2-C3 bond was oxidized with NaIO4 to generate oxycellulose under the acidic condition. The hydroxy on C6 in oxycellulose was chlorinated with sulfur oxychloride in DMF to give oxycellulose chloride.

将微晶纤维素先用NaOH溶液进行活化，然后在酸性条件下，用NaIO4氧化2，3位成为醛基，使其成为氧化纤维素，再将其在DMF下用二氯亚砜进行六位氯化制得氧化纤维氯化产物。

Professional long-term supply of thionyl chloride, sodium percarbonate, hydrogen peroxide of various specifications, run methanol, sulfur powder, liquid, sodium hypochlorite and other products.

长期专业供应氯化亚砜、过碳酸钠、各种规格双氧水、兼营甲醇、硫黄粉、液碱、次氯酸钠等产品。

With the continuous increasing production of high-sulfur crude oil,non-hydrogenation deslulfurization technology has become the main developing goal in big petrolic corporations.

随着加工高硫原油量的不断增加，开发非加氢脱硫工艺成为各大公司科研开发的重点。

From the phenylethylene additives'sulfur are chrome-plated wave of chromium hardness likely higher than normal.

从含不无机添增剂的铬镀波洋获得的铬软度有不定比别致的更矮。

Based on a new, patent- pending polymeric phosphonate, this digester additive controls the metals that interfere with bleaching and with the sulfur chemistry of a kraft cook.

基于这项新的待申请的磷酸酯聚合物。这项消化添加剂能够控制干预牛皮纸蒸调的硫化处理和漂白的金属。

Most phototropic organisms are autotrophic (i.e.show photoautotrophism);these comprise the green plants,Cyanobacteria,and some photosynthetic bacteria(the purple and green sulfur–bacteria ).

大多数光合成生物是自养的，这包括绿色植物、蓝细菌以及一些光合细菌（紫色硫细菌和绿色硫细菌）。

A polarographic procedure is described for the determination of elemental sulfur in petroleum fractions and products.

提出了采用示波极谱法测定馏分油及石油产品中元素硫的方法。

The concept of engineering applicable pozzolanic reactive sulfur sorbent and its chemical composition and preparation process is proposed for the first time by using agglomeration of pulverized limestone particles.

本文借助于固体粉粒体成型技术首次提出并开发了工程实用的水硬性高效脱硫剂的概念、配方和成型工艺，并成功地以工业规模制成了水硬性高效脱硫剂。

It can be seen that precleaning alone would not reduce the total sulfur content of the four coals to levels anywhere near the standards.

可以看出，这四种煤的总含硫量仅靠预先洗选将不能降低到完全接近标准规定的水平。

143 It can be seen that precleaning alone would not reduce the total sulfur content of the four coals to levels anywhere near the standards.

参考译文可以看出，这四种煤的总含硫量仅*预先洗选将不能降低到完全接近标准规定的水平。

This was not understood at the time, and therefore went unaddressed, until ascension became so distorted that we chose to stop ascending and wait for a time when all records would be revealed.

这在当时没有被了解，因此进行着无改编，直到提升变得如此扭曲，我们选择去停止提升并等待所有记录能被揭示的那一天。

The attack＇s nuisance value is increased because mobile phone networks also send notifications of new voicemail by sms,so an attacked phone may stop advising of new voice messages too,it warned.

它警告：这种攻击的危害增长是因为移动电话网络也会通过短信发送新语音邮件的通知。所以受到攻击的手机可也以停止新的语音信息的提示。