甲醛

The oxidation of benzyl alcohol produces benzoic acid and benzaldehyde selectively with the amounts of hydrogen peroxide varying.

苯甲醇氧化时，随过氧化氢加入量的不同，可以选择性地给出苯甲醛和苯甲酸。

With Ti(30)/W(400)-HMS as catalyst, at n:n=1:2,ω=4%, and the reaction time 5 h, the conversion of benzyl alcohol and the selectivity of benzyl aldehyde reached to 72.6% and 96.9%, respectively.

利用Ti(30)/W(400)-HMS为催化剂，当n：n(H2O2)=1：2、ω=4%、反应时间为5 h时，苯甲醇的转化率和苯甲醛的选择性分别为72.6%、96.9%。

Reviews the removal methods of formaldehyde, including physical adsorption method , chemical method and biological method.

介绍了物理吸附法、化学法和生物法等去除甲醛的方法的研究概况，指出了今后的研究方向。

Ya Decorative Chambers Hubei ZHU Bin division director told reporters, but did not paint green wallpaper, wallpaper in the course of construction in front of the first brush varnish, coating a layer of glue to the other, therefore, of formaldehyde in the house longer stay .

雅庭装饰湖北区划总监朱滨告诉记者，但是墙纸却没有涂料环保，壁纸在施工过程中首先在前面刷清漆，另外要涂一层胶，所以这样甲醛在屋里停留的时间更长。

Modified POM ; the three layers composite ; friction and aging resistant property ; supporting material of building in anchor gate

改性聚甲醛；三层复合材料；摩擦与老化特性；闸门滑道支承材料

The major pollutants in the models 25B, 25G and 25K are bacteria in the air. The major pollutants in the model 25T is air formaldehyde. The major pollutants in hard seat carriage are CO2 and bacteria in the air. The major pollutants in soft berth carriage is air formaldehyde.

结论］CO、CO2和PM是25B型车的主要污染物；空气细菌是25B、25G、25K型列车的主要污染物；甲醛是25T型列车和软卧车厢的主要污染物；CO2、空气细菌是硬座车厢的主要污染物。

Base on the high quality MIR source, cavity ring-down spectroscopy technique was used for gas sensing. A sensitivity of 72×10^(-9) was achieved when use the system to measure the trace H2CO in gas mixture.

采用该中红外光源和衰荡腔光谱技术建立了一痕量气体成分光谱检测系统，并使用该系统对混合气体中的甲醛成分进行了测量，得到了72×10^(-9)的检测灵敏度。

Japanese Komatsu, Hitachi, Kato, Sumitomo, Carter, the United States and South Korea's Hyundai, Daewoo, Samsung, various kinds of imported excavator seal the fuel tank, the center seal, crankshaft oil seals before and after, and services for major projects in the fuel tank of the domestic plants, for provide users with a variety of piston oil seal (SPGO, SPGW, SPG portfolio, such as seals), piston rod seal (SPNO, IDI, HBY, etc.), a variety of materials to support Central (A phenolic cloth, filled PTFE composites, POM, etc.), V-type combination of seals, all kinds of O-ring, PTFE block films, a variety of automotive oil seals.

提供日本小松、日立、加藤、住友、美国卡特及韩国现代、大宇、三星、各种进口挖掘机油缸密封件、中心油封、曲轴前后油封，并服务于国内各大工程油缸厂，为用户提供各种活塞油封（SPGO、SPGW、SPG等组合密封）、活塞杆密封（SPNO、IDI、HBY等）、各种材料支撑环（酚醛甲布、填充复合聚四氟乙烯、聚甲醛等），V型组合密封圈，各种O型圈、聚四氟乙烯挡片、各种汽车用油封。

The effect of charging order of dioxolane comonomer in copolymerization with trioxane on microstructure of polyacetal was investigated by DSC, pyrolysis gas chromatography and polarized microscope.

用DSC、裂解气相色谱及偏光显微镜研究了聚合时的加料方式，对以二氧五环为共单体的共聚甲醛的结构的影响，并研究了它与热碱稳定性、缺口冲击强度等性能的关系。

Polyacetal ; charging order ; random copolymer ; structure ; dioxolane

聚甲醛；加料方式；无规共聚物；结构；二氧五环

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。