The effect of ceria and titanium dioxide on photocatalytic degradation of phenol waste water had been compared. It showed that ceria excelled at the removal of phenol than titanium dioxide.

比較了二氧化鈰和二氧化鈦對苯酚廢水光催化降解的效果日韩一级a爱视频在线观看，二氧化鈰對苯酚的去除率優(yōu)于二氧化鈦最美情侣高清免费观看。

These dendritic NOBIN derived Schiff base ligands have been applied to titanium catalyzed hetero-Diels-Alder reaction of Danishefshy's diene and aldehydes, affording the corresponding 2-substituted 2, 3-dihydro-4H-pyran-4-one in quantitative yields and excellent enantioselectivities (up to 97. 2%ee). Comparing the reactivities and enantioselectivities of reaction catalyzed by the titanium complexes of these Schiff base ligands, it was found that a series of ligands L〓 were superior to the other three series of ligands L〓, L〓 and L〓, a significant positive NLE and a dendrimer effect existed in the L〓 dendritic catalyst system. The disposition of the dendritic wedges and the dendron size in the ligands were observed to have a significant impact on the enantioselectivity of the reaction.

NOBIN衍生的樹枝狀大分子希夫堿手性配體與鈦形成的配合物在催化不對稱雜Diels-Alder反應中的應用將得到的四個系列NOBIN衍生的樹枝狀希夫堿三齒手性配體與四異丙氧基鈦形成的配合物用于催化Danishefsky's diene與醛的不對稱雜Diels-Alder反應sese婷婷，通過反應條件的優(yōu)化国产av外国av，獲得了定量的收率和最高達97.2％ee值的對映選擇性欧美一级高清片；考察了這四個系列NOBIN衍生的樹枝狀希夫堿鈦配合物的催化活性和對映選擇性亚洲无码黄色在线视频，結果發(fā)現(xiàn)它們的活性次序依次為L〓≈L〓＞L〓＞L〓，對映選擇性次序依次為L〓＞L〓＞L〓＞L〓无码一级毛片一区二区。

P-t curves of titanium hydride and titanium deuteride desorbing hydrogen and deuterium are investigated at 350～550 ℃ by using the method of reaction rate analysis in a constant volume system.

在高真空金屬系統(tǒng)上測定了氫化鈦和氘化鈦在恒容體系中黄网页在线播放、350~550℃溫度下熱解吸氫和氘的P-t曲線；應用反應速率分析方法計算了各自在不同溫度下的反應速率常數(shù)又粗又硬的免费黄色网站，得到氫化鈦和氘化鈦熱解吸的表觀活化能分別為27超碰免费一欧美精品。

Those results make basis for fabricating discontinuously reinforced titanium matrix composites with high properties and broadening the application area of discontinuously reinforced titanium matrix composites.

這些研究為以后制備高性能的鈦基復合材料和拓展鈦基復合材料的應用領域打下了堅實的理論基礎和為批量生成提供了實用途徑。

Titanium or titanium alloy is of nice histocompatibility, which raised the success rate of subgingival false tooth because of little irritation.

鈦或鈦合金具有良好的組織相容性99热这里精品5，對牙齦刺激小狠狠爱无码一区二区三区，可以增加齦下義齒的成功率。

Based on the features of Panzhihua titanium concentrate,the reasons why titanium recovery is low and aluminum consumption is high when ferrotitanium is smelted in alumino-thermic process were analyzed.

結合攀枝花鈦精礦的特點女人高潮被爽到呻吟的视频，探討了采用鋁熱法冶煉鈦鐵時鈦回收率低国产精品国产精品国产专区不卡、鋁耗量高的原因，并提出了相應的解決措施嫩草偷拍精品偷拍视频。

Professional manufacturing: electrical circuit board Flashboard frame heat pipe, titanium heating tube, Teflon heaters, precision oven, circuit board hanging tool, circuit board tunnel furnace, SMT equipment, titanium blue.

專業(yè)生產制造：電線路板插板架熱管美女曰逼黄色网站、鈦加熱管、鐵氟龍加熱器在线免费观看你懂得、精密電烤箱情久久国产第一页、電路板掛具色综合aaaaaaaa在线、電路板遂道爐、SMT設備中文字幕黄色网站、鈦藍天堂视频www在线。

Up to now, there is not any intact method which can quantificationally extract and analyze the soluble titanium in soil and fractionate titanium forms.

因此，研究土壤中鈦的分級測定99视频有精彩视频，對鈦在土壤中的行為和肥力特征都具有重大意義欧美一区精品视频孕妇。

Galvanization: 1st, pure titanium series, 2, beta titanium series: The A.

電鍍： 1、純鈦系列日本国产品爽爽美女二级视频、291欧美精品自拍网站、β鈦系列： A。

Our Company is a professional manufacturer in producing precise screw,nut,thread,gasket,nail,hardware accessories,titanium jig of glasses,titanium gemel,ctc.

興興達公司是一家專業(yè)生產制造精密螺絲国产中文字幕嫩草操、螺母亚州黄色网、絲通、墊片国产乱对白刺激视频欧美、釘子又大又粗又硬黄色一级毛片、精密五金配件及眼鏡夾口、鈦鉸鏈為主的制造商欧美永久精品。