查询词典 silica gel

The sample was made of FK-2 glass and iceland crystal,between which either glycerine or organic silica gel could be used for gluing.

超高透偏光棱镜[4-5]便是这方面的典范：文献[4]和文献[5]分别给出了如图1所示的2种棱镜，它们的透射比一般均高于98%，使用得当完全可以达到99%以上。

The alternative use of buffered silica gel resulted in modest hydrolysis (~5-10%) of the imine.

选用温和的水解导致缓冲硅胶(~5-10%)的亚胺。

Results show that 4-oxo-β-ionone is the major product with yield of 53.5% under the conditions as follows: reaction temperature 45℃, reaction time 24 h, the molar ratio of n: n(NaClO3): n 20: 100: 3, and pH value of solution in 1-3; on the other hand, 5,6-epoxy-β-ionone is major product with yield of 25.4% when reaction temperature is 40℃, reaction time is 24 h, the molar ratio of n: n(NaClO3): n is 20: 120: 5, and pH values of solution is 3. The excessive β-ionone can be recovered by vacuum distillation for reusing again. 4-oxo-β-ionone and 5,6-epoxy-3-ionone were purified by recrystallization and silica gel column chromatograph respectively with the purity over 98%.

研究结果表明：氯酸钠氧化β-紫罗兰酮的反应主要生成4-氧代－β-紫罗兰酮和5，6-环氧－β-紫罗兰酮，经重结晶和硅胶柱层析分离，纯度高于98%；4-氧代－β-紫罗兰酮的有利合成条件是反应温度为45℃，反应时间为24h，溶液的pH值为1~3，反应物配比n：n(NaClO3)：n为20：100：3，最佳收率为53.5%；5，6-环氧－β-紫罗兰酮有利的合成条件是反应温度为40℃，反应时间为24h，溶液的pH值为3，反应物配比n：n(NaClO3)：n为20：120：5，其收率为25.4%；未反应的β-紫罗兰酮经减压蒸馏回收后可重复使用。

Vegetarian alternatives include bentonite, kieselguhr, kaolin and silica gel.

素食替代品包括膨润土，矽藻土，高岭土和矽胶。

The chemical constituents of Huperzia serrata Trev. are mainly flavonoids, triterpenoids and alkaloids. In order to get further comprehension of lycopodium alkaloids, we studied the low-polar section of the alkaloids extraction of Huperzia serrata and 19 alkaloids were isolated by ways of silica gel, RP-18 and Sephadex LH-20 etc. All of their structures, including five new compounds and two known ones that were firstly found from this genus, were elucidated with the help of Mass, IR, NMR spectra and so on. The five new alkaloids (HS-07, HS-08, HS-09, HS-10 and HS-11) are belonged to lycopodine class. The other two ones that were new to this genus (HS-18 and HS-19) are belonged to miscellaneous group.

蛇足石杉的主要化学成分为黄酮，三萜和生物碱，为进一步了解该植物的生物碱成分，我们研究了蛇足石杉氯仿总碱低极性部位的生物碱成分，运用正相硅胶、反相RP-18、凝胶LH-20等方法分得了19个生物碱，并通过质谱、红外、核磁共振等波谱鉴定了它们的结构，其中5个为新化合物，2个为首次从该属植物中分离得到的化合物，所分得的新化合物：HS-07、HS-08、HS-09、HS-10和HS-11均为lycopodine类石松生物碱，首次从该属植物中分得的化合物为miscellaneous类：HS-18和HS-19。

Of Shenzhen City Noor large supply of 2 D/3D (PS / 2, serial port) mechanical mouse, the ball in the silica gel, and other pieces of plastic raw materials rose sharply at the same time, our products maintain the original price is not the policy of floating , Won the Guangdong Province and Shenzhen many colleagues around the orders.

深圳市努尔电子有限公司大量供应2D/3D（PS/2、串口）机械鼠标、在硅胶球、塑胶件等原材料大幅上涨的同时，我们的产品保持原有价格不上浮的政策，赢得了广东省各地及深圳很多同行的订单。

Preparation of pure chlorophylls and pheophytins was performed by microcrystal cellulose column chromatography and silica gel thin layer chromatography respectively.

3分别采用微晶纤维素柱色谱和硅胶薄层色谱制备出较纯的系列叶绿素衍生物。

The installation procedure of the Anti-fog mirror is after the Anti-fog film paste spreads on the back of mirror , and connect up the power supply, then mount the mirror on the ideal position of the wall by either double-sided glue and neutral silica gel.

防雾镜的安装是在防雾膜贴敷于镜子的工作完成后，然后是与墙体预留电源的连接，然后用双面胶和中性硅胶粘贴在墙上理想位置的过程，四周再用中性硅胶封边，安装完成。

Antifog mirror installed in Antifog film Application Method in the mirror after the completion of the wall and then is the connection for power, and then use double-sided adhesive silicone paste and neutral in the process of the wall ideal location, surrounded Edge neutral silica gel used, the installation is complete.

If Shaped Antifog film， no fever can be cut off part of wire 防雾镜的安装是在防雾膜贴敷于镜子的工作完成后，然后是与墙体预留电源的连接，然后用双面胶和中性硅胶粘贴在墙上理想位置的过程，四周再用中性硅胶封边，安装完成。

MUMU soft protective cover series are made of hi-quality transparent silica gel materials, it's soft,thin,morbidezza, harmless, water-washable and anti-static, it's not dust-sucking with high wearing feature.

MUMU 软质保护套系列采用优质透明硅胶料量身定制而成，质地柔软，轻薄，细腻，无毒，可水洗，抗静电，不吸灰尘，具有超强的耐磨性。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。