有产的

These two new synthetic methods feature high yield, good repeatability and easy work-up,which make them promising in industry applications.

这两种新的合成方法无需高温高压，产率高，重现性好，产物后处理简单，从而使得它们有了非常好的工业化应用前景。

The major scientific achievements of this study are as follows:1.Important angiospermae pollen fossils such as Quantonenpollis,Cranwellia,Scollardia, Lythraites,Xinjiangpollis,Gothanipollis,Triporopollenites and angiospermae fossils as Platanus septentrionalis,Trapa angulata have been obtained from the Quantou Formation. They are Late Cretaceous in age.

获得的主要认识如下：1、泉头组产有晚白垩世重要的被子植物花粉化石Quantonenpollis，Cranwellia，Scollardia，Lythraites，Xinjiangpollis，Gothanipollis，Triporopollenites等和晚白垩世被子植物化石Platanus septentrionalis，Trapa angulata等。

Reaction (1) was examined with different kinds of acetal substrate(1) and vinyl ethyl ether, and the results indicated that the 1, 1,3-triethoxy compounds could be obtained in high yields of 88 and 97% respectively when the R groups of the acetal are phenyl and anisyl, while the yields amounted only to 55-75 % for R=a...

有证据表明这种催化反应也可能是通过正碳离子中间体进行的。本反应的产物1，1，3-三乙氧基化合物经乙酸/乙酸钠溶液水解可得反式α，β-不饱和醛。水解产率：芳香族产物大于90%，脂肪族产物大于75%。

Plants distinguished by tubular petaloid perianth and inferior ovary: Aristolochiaceae; Rafflesiaceae; Hydnoraceae.

以管形花瓣状花被和下位子房著称的植物；马兜铃科；大花草科；一个产于非洲和阿根廷的有花植物科。

The tongue of a bell .plants distinguished by tubular petaloid perianth and inferior ovary: Aristolochiaceae; Rafflesiaceae; Hydnoraceae.

以管形花瓣状花被和下位子房著称的植物；马兜铃科；大花草科；一个产于非洲和阿根廷的有花植物科。

Lizard with black and yellowish beadlike scales; of western Mexico.

长有珠子状的黑色和微黄色鳞片的蜥蜴；产于墨西哥西部。

A deciduous Asian tree, widely cultivated and naturalized in the southern United States and having bipinnately compound leaves, clusters of purplish flowers, and yellow, globose, poisonous fruits.

楝产于亚洲的落叶乔木，，有二回羽养复叶、紫色花簇以及黄色球形、有毒的果实，在美国南部被广泛引种栽培

I think this and do not caesarean section is not related to my sister's child is birth, there are such circumstances ah!

我觉得这和剖腹产不剖腹产是没有关系的，我姐姐的孩子是顺产，也有这种情况啊！

Caproic acid is produced by the fermentation of caproic acid bacteria.In old pits,there is the"species－H2－transformation"between methane bacteria and caproic acid bacteria.

老窖中存在己酸菌与甲烷菌的&种间氢转移关系&，甲烷发酵有促进己酸发酵进程多产己酸的作用，从而增加己酸乙酯含量，提高酒质。

Any of various plants of the genus Crepis having loose heads of yellow flowers on top of a long branched leafy stem; northern hemisphere.

还羊参属的一种植物，茎长、多叶，有黄色、松弛的头状花序；产自北半球。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。