查询词典 brown bear

The auxiliary can be recovered in high yield (81%) only by filtering and recrystallization. Besides, some other aldehydes have been chosen to test the enantioselectivity of N,N\'-dibenzyl tartamide, in comparison with two other allylaborates reagents developed previously by Roush and Brown, respectively. The results show that %e.e. of homoallylic alcohol is superior to that of the former, and approaches the Brown reagent.

产物经S_N2反应得瑞格列萘中间体-甲基烯丙基-2-氯苯基-叠氮甲烷(17)；同时，将筛选出的新型手性配体N-苄基酒石酸二酰胺用于其他几种醛(正丁醛，异戊醛和环己醛)的不对称烯丙基化反应，并与广泛应用的Roush配体(22)和Brown配体(27)相比较，发现其立体选择性优于Roush配体，并接近Brown配体，但明显具有可回收利用的优势。

Leaf blade adaxially rugose, abaxially with brown to yellowish brown stellate hairs, margin entire or with scattered teeth

叶片正面具皱纹，背面具使到淡黄色成褐色棕色毛，边缘全缘或具星散的齿 34 Q。 lanata 通麦栎

Life in Color: Brown Stretching toward a blue salt lake, dry waterways crisscross the brown expanse of Bolivia's Salar de Uyuni, the world's largest salt flat.

伸展对一个蓝色盐湖，干水道纵横交错的棕色的版图，玻利维亚的撒拉族德uyuni ，世界上最大的盐的浅滩。

Freckles: the name has a lot of people,"flies feces,""soil spot","silkworm excrement",Cover face sand, flea flea spot ranging from freckles are a good hair in the face, neck and hand back the brown or dark brown pigment spots, many in the 6-year-old appeared often increase with the age of growth.

雀斑：民间的叫法又有很多，"苍蝇屎"、"土斑"、"蚕沙"、蒙脸沙、虼蚤斑不等，雀斑是一种好发于颜面、颈部及手背部的黄褐色或暗褐色色素斑点，多在6岁左右出现，常随年龄的增长而增多。

There is no more significant contrast than that between the parting instruction of Tome Brown's mother, in the English classic Tom Brown's School-Days, to "hold his head high and answer straight" and the traditional parting instruction of the Chinese mother that her son should "not meddle with public affairs."

英国名著《汤姆求学记》中有这样一个场景，汤姆·布朗临行前，母亲嘱咐他"要抬头挺胸，直截了当地回答别人的问题"，然而中国母亲对儿子的临别嘱咐却往往是"少管闲事"。

Wedge-tailed Shearwater is brown and usually looks brown even at greater range.

而长尾水剃是棕色的，如果在很远的距离看的时候看起来也是棕色。

Through investigation on the Eh values of cinnamon soil,sierozem,brown desert soil in situ with new electrochemical methods and summarization of the same results of laterite,red soil and yellow brown soil,a horizontal zonal variation of oxidation-reduction characteristics in semi-humid,semiarid and arid areas from south China to north China is revealed.

用新的电化学方法原位考察了褐土、灰钙土、棕漠土、黑土、风沙土、灌淤土、盐土、碱土、亚高山草甸土、灰褐土、水稻土和旱地土壤的氧化还原状况。综合已有原位测定结果，地带性土壤的电位由南向北的空间分异与其水平地带谱相应；亚高山草甸土和灰褐土的氧化还原状况随山体高度和植物群落而呈垂直分异趋势。

His brown face was creased but not wrinkled, he had a ruddy colour in his smooth-shaven cheeks and in his lips, under his long brown moustache.

他的棕色的脸creased但不皱，他在他的滑剃光面颊红润肤色，在他的嘴唇，在他的胡子长的棕色。

"In the sudden silence as I finished playing, I looked up to a circle of grim, expressionless faces. Father Brown rose to his feet, and his somnolent voice echoed throughout the silent Temple Hall."......"Instead of the grateful joy that I expected, they were words of quiet rejection! Instead of praise, sullen dismissal. I watched in shock and horror as Father Brown ground my precious instrument to splinters beneath his feet..."

当我结束了弹奏，殿堂一阵宁静，周遭的阴森气息让我望闻生畏，布朗神父面无表情，举起他的脚，深沉的声音在沉寂的殿堂中回荡，看不见我所期待的喜悦只有沉默的回绝，不悦的打发取代了赞美，当我望著神父，将我心爱的乐器在他脚下被踩成了碎片，我一阵错愕与惊悚！

Some parts of the stalactite cave is very strange, its upper half was brown, its lower half is milky white, among them there is a dark brown to nearly 2 cm thick boundaries.

洞里一些地方的钟乳石非常奇特，其上半部呈棕黄色，其下半部则呈乳白色，在他们中间有一条深褐色的近2厘米厚的界线。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。