Polymerization of norbornene was carried out in the presence of a catalyst system consisting of amidogen substituted mono(η~5-cyclopentadienyl)titanium/methyl aluminoxane.

采用胺基取代單茂鈦{Cp~*TiCl_2N[Si(CH_3)_3]_2}與甲基鋁氧烷組成催化體系催化降冰片烯聚合国产精品拍在线天天更新，得到有一定結晶結構的囗欧美特婬的婬乱视频、可溶的聚降冰片烯亚洲一区在线视频播放。

Plasma etched through the meters of titanium-A armor plating like a blowtorch through rice paper, and her center amidships decks vented.

等離子穿透數(shù)米鈦A型裝甲板就像噴燈燒穿煙紙色哟哟一区二区三区视频，她的腹部中心甲板暴露出來。

Result showed that amorphous ammonium titanium phosphate with an average particle size of 40 nm was obtained when product was kept at 80℃ for 3 h.

結果表明色综合精品，80℃干燥3h得到的是無定型磷酸鈦銨產品日韩在线精品福利网页观看视频，平均粒徑約為40 nm，磷酸鈦銨催化合成乙酸丁酯中是一種極好的非均相催化劑免费网站9999。

Meanwhile,anatase form of TiO_2 thin films were prepared by anodic oxidation of titanium plates.

首先通過高溫熱解的方法合成了不同尺寸的CdSe量子點国产日韩久久综合影院AV。

Has developed the world's leading high levels of visible activity of anatase titanium dioxide Sol series of products and production technology.

開發(fā)出具有世界領先水平的高可見光活性的銳鈦礦二氧化鈦溶膠系列產品與生產技術。

Guangxi xingmeixiang is focused on the manufacture and trade of a series of titanium dioxide anatase.

企業(yè)以銳鈦型鈦白粉系列產品的制造a级片黄色网站、研發(fā)為主營業(yè)務嗯啊视频。

Some typical structures of titanium nanowires , i.e. four-strands helical, centered pentagonal, hexagonal and the thicker hexagonal structures are chosen to study the structural and size effects of ultrathin nanowires. The angular correlation functions and vibrational properties are discussed.

我們選擇不同的結構和生長序列的幾個典型的超細鈦納米線，即四邊形人人人人看人人人人操、五邊形和六邊形序列国产成人高清亚洲影院在线观看，以及六邊形序列的兩個較大體系，以分別考察結構和尺寸效應强制高潮18XXXX按摩免费视频。

The results show that the glass-ceramics with fibroid structure is produced after definite heat treatment, the main crystallization phase is hedenbergite and anorthite is the minor crystallization phase. The optimal process of heat treatment shows as follows: the nucleation temperature is 850 ℃ and hold time is 100 min, and the crystallization temperature is 980 ℃ and hold time is 80 min. With increasing heat treatment temperature, the FT-IR absorption bands appear obvious split, the aluminum-oxide polyhedron in the glass network changes from [AlO4] to [AlO6]. The titanium ion in the glass network gradually transforms to the 6-coordinated, moreover forms minicrystal of MgTi2O5 and Fe2TiO4 which provides the position of heterogeneous nucleation for the growth of crystal.

結果表明：在一定的熱處理條件下可以以基礎玻璃制備出主晶相為鈣鐵透輝石，次晶相為鈣長石的纖維狀結構的微晶玻璃91超碰在线观看；最佳的熱處理工藝為：850 ℃核化100 min久久99久久99久久这里只有精品资源，980 ℃晶化80 min；隨著熱處理溫度的升高久在线视频，紅外吸收帶發(fā)生明顯的分裂亚洲国产另类久久久精品红牛；玻璃結構中的[AlO4]向[AlO6]轉化；網絡結構中的鈦離子逐漸轉變?yōu)榱湮卉耻耻砏WW，形成微晶相——鈦酸鎂和鈦鐵晶石69国产精品视频免费AAAA，為晶體的生長提供非均勻形核位置。

First of all, titanium has excellent biocompatibility, high mechanical strength and low proportion; the second, the potential biological toxicity of non-noble alloys (such as alloys of Co-Cr and Ni-Cr)was avoided; the third, the disadvantage of over-abrasion of antagonization teeth resulted from high rigidity of porcelain was also avoided; the last, metal-resin bonding prostheses was easy to be repaired in mouth.

隨著硬質樹脂性能的進一步提高及鈦鑄造技術和粘結技術的發(fā)展免费全部午夜电影手机在线观看，鈦-樹脂粘結修復體的應用將越來越廣又粗又硬又黄的淫秽视频。通過課題組成員的一致努力，以往困擾鈦-樹脂粘結修復在臨床應用的鈦與樹脂的粘結強度較低這一關鍵問題已較好的得以解決。

The effects of alkali treatment on the deposition of apatite on various titanium alloy substrates have been studied.

改變堿液處理條件和基體材料欧美一级高清在线播放，考察了這些參數(shù)對鈦合金誘導磷灰石能力的影響欧美精品一区二区三区视频在线播放。