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During the process of formaldehyde degradation, as the residence time increased,η increased. After 0.6 s, the increase of η became unconspicuous, and the suitable residence time was

降解过程中，气体流量Q对甲醛的净化效率η也有较大的影响，随着Q的增加，η下降明显。

At last,a convergent and general protocol to marine natural product,as demonstrated by the enantioselective total synthesis of malyngamides O,P,Q,R, 5"-epi-Q and 5"-epi-R bearing terminal vinylic chloride structure,was developed in detail.E,(7S)-7-methoxytetradec-4-enoic acid was prepared using the above described Johnson-Clainsen rearrangement,the terminal vinyl chloride was constructed using Wittig reaction as key step,the pyrrolidone derivative was constructed using L-serine as natural chiral pool.Starting from the synthesis of malyngamides O and P to explore the general route,an aldol reaction of methyl acetate with the vinyl chloride part in the presence of LDA gave the skeleton of amine portion,followed by amidation with the fatty acid finished the synthesis of malyngamide P.

先以malyngamides O和P为试点探索通用合成路线，将乙酸甲酯和烯氯部分在LDA存在下进行aldol反应得到氨部分的骨架，再将手性不饱和脂肪酸和氨部分进行酰胺化反应完成了malyngamide P的合成，将P在碱性条件下进行烯醇甲基化反应完成了malyngamide O的全合成。

Although this solution may3 X6 I X' a5 S5 Q annoy a few tourists in the short term, it will reduce the number of5 X# \; h- K/ i8 q# s people using the beaches and will raise money for replenishing the sand..

尽管这一解决方案会在短期内触怒少量游客，它将会减少使用海滩的人数并增加补充沙子的资金。

X. ~ q, C; T w# h8 q王建民加油站 After Melky Cabrera blooped a single, Hernandez struck out Craig Wilson for the inning's first out.

在牛奶小飞球形成一垒安打后，赫南德兹三振了排球威尔森，而这不过是第一个出局数。

A kittening box I use an under-the-bed sweater box.

一个装小猫的盒子（我用的是放在床底下的装毛衣的盒子）聊狗网q#a''2Y'-q

Q ?8 f0 q# j% t, L The molecules(3 responsible for the characteristic leathery, plastic aroma that suffuses(4) new cars are known as volatile(5) organic compounds.

F 新车中皮革、塑料的味道是一种挥发性有机化合物。

Immediately stand the panel in the constant-temperature cabinet or drying room, in a vertical position, with the strips of paint horizontal and with the thickest film at the bottom of the panel.

V& r1 E& Q！ s ~5 c0 ~ j3 Q 立即把玻璃板竖立起来放在恒温箱或干燥房间内，保持竖立状态。

Rain makes bowstrings slacks, and after a march in the wet arrow—feathers flake off.1 S+ Y* y Q- x3 U; q; z3 C

下雨可以让弓弦松弛，在雨天行军以后，箭羽往往会脱落。

Am ashamed to be American because of the association with uneducated, narrow-minded dimwits like you!

Q； {$ 2 Q 我觉得做美国人很丢脸，就是因为你们这些胸无点墨小肚鸡肠的SB！

M: Z |; q, Q You can stick paper with paste made of flour and water.

你可以用面粉和水调制成浆糊把纸粘起来。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。