查询词典 alder

The stereoselective chlorinating addition of double bondin polysubstituted cyclichexane via substrate control inTMCS -〓 system has been investigated in detail.

较系统地研究了九个典型的三取代卤代亲双烯的Diels-Alder反应，发现β-卤代亲双烯23，49，55，6la，61b均能较好地进行反应；而β-卤代亲双烯46a，46b，62则不能进行反应。

Deeply embosomed in tranquility, the forgotten is my forgotten. The December coming to the County Wicklow, an alder lying in the lumber yard lost its root, because it was preserved in the earth by itself.

厄 土《被遗忘的我们》：遗忘属於那些精心珍藏的事物，在维克洛郡的十二月，一棵伐木场的赤杨丢掉了根系，因为它把它深藏在土里。nh200801。

I pointed to where our village lay, on the flat in-shore among the 16）alder-trees and 17）pollards, a mile or more from the church.

我把我们村子的位置指给他看，村子就坐落在距离教堂一英里多远的平坦河岸上，四周种着恺树和截梢树。

I pointed to where our village lay, on the flat in-shore among the alder-trees and pollards, a mile or more from the church.

我把我们村子的位置指给他看。村子就坐落在距离教堂一英里多远的平坦河岸上，四周耸立着赤杨树和截梢树。

I pointed to where our village lay, on the flat in-shore among the alder-trees and pollards , a mile or more from the church.

我把我们村子的位置指给他看。村子就坐落在距离教堂一英里多远的平坦河岸上，四周矗立着赤杨树和截梢树。

For examples as an additive for lithiumion batteries,as a component of surface coatings or as a monomer for the preparation of polyvinylene carbonate,and the Diels-Alder reaction was carried out successfully between vinylene carbonateand many dienes.

碳酸亚乙烯酯作为聚合物单体可在自由基引发作用下形成较高分子量的聚碳酸亚乙烯酯，另外VC可以和许多二烯类化合物发生反应，合成出许多精细化工中间体。

Kitchen cabinets can be made from dozens of woods including Oak, Maple, Pine, Cherry, Hickory, Poplar, Alder and Birch.

厨柜可从几十伍兹包括橡树、枫树、杉树、樱桃、胡桃木、杨树、桦树、桤。

It comprises of trans-Himalayan agro-pastoral system of the Dokpas in the alpine plateaus, traditional agroforestry such as alder-cardamom and farm-based systems in the temperate zones, and terraced/valley rice systems in the lower warm temperate to sub-tropical agroclimatic zones.

多样化的农业生态系统，包括位于高山地区农牧复合系统Dokpas，位于温带地区的传统的农林复合系统（如桤木-草本混交农业系统），以及海拔较低的暖温带到亚热带农业气候区的梯田/谷地稻作系统。

And the birch and the wild cherry and the alder beginning to come out.…But I haven't noticed the oak. Yes, here he is, the oak!

无论是桦树、稠李、还是赤杨都已经开始……可是没有看见橡树，瞧，这就是橡树。

It is shown that it is difficulty to differentiate each vegetation type among sub-tropical evergreen forest, sub-tropical coniferous forest and sub-tropical deciduous forest because of the mixture of their tree spectra. According to the reflection index in the wavelengths of 750 nm to 1 100 nm, the tree species can be divided into 4 groups with descend in reflectivity. Each tree specie can be differentiated from each other according to its slope of the spectrum curve and its reflection index in the wavelengths of 770 nm to 1 010 nm for each forest vegetation type. The unique first order derivative feature can be used to identify litsea, alder, fir, red birch, southwest birch, large schima confertiflora, taiwania flousian and small leaf schima confertiflora.

研究表明：亚热带常绿阔叶林、亚热带针叶林和亚热带落叶阔叶林等植被类型，因其树种间光谱特征混淆严重，而难以彼此区分；根据其反射率在750~1 100 nm范围上的差异，可将其归为4类；就各植被类型而言，其树种间在光谱曲线坡度，以及在770~1 010 nm范围上具有显著差异，可据此将其区分；木姜子、桤木、杉木、红桦、大叶木荷、秃杉和小叶木荷等因具有独特的光谱一阶导数特征，据此可以识别提取。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。