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In Kubuqi sandland of Erdos plateau, from 1991 to 1996, we collected the datum of 42 months about three-toed jerboa,dersert hamster, Chinese jird, striped hamster,five-toed jerboa, and ground squirrel, and we focused to describe their seasonality, inter annual change and trends by moving average and analysis of PCA.

以 1 991~ 1 996年在在中国农科院草原研究所鄂尔多斯高原沙地草场改良试验站 6年4 2个月的调查材料为基础,运用 PCA分析技术、移动平均等方法,对该地三趾跳鼠、小毛足鼠、子午沙鼠及黑线仓鼠、黄鼠及五趾跳鼠等 6个啮齿动物种群的季节性、年季动态和趋势进行了描述分析。

The synthesis of guaifenesin was improved by direct application of the hydrolyzate of epichlorohydrin for the etherification with guaiacol and using toluene and ethyl acetate as the solvents for crystallization and recrystallization, respectively.

通过直接利用环氧氯丙烷的水解液中的 3-氯- 1,2 -丙二醇和改良成品析晶法及重结晶溶剂等工艺改进,愈创甘油醚的总收率可达 80 %。

In the three methods, the improved Guanidine HCl method and the Trizol method could prepare high quality and quantity RNA while the result of the hot phenol method was not good.

结果表明:3种方法中,改良的盐酸胍法和Trizol法可以提取到高质量的RNA,热酚法的提取效果不理想。

These balls were actually made of the gutta-percha resembling a rubber.

到了十九世纪五十年代末,经过研究和改良,发明了橡胶球,这种球实际是用杜仲胶制作而成的,杜仲胶类似于橡胶。

Therefore, in accordance with its own ergonomics and the concept of hair-dryer for improved design.

因此,根据人机工程学和自己的构想,对电吹风进行改良设计。

Improvement of three : button design, the design changed the traditional hair-dryer front control buttons index finger, Distribution will be a key aspect of the switch, using thumb operation.

改良部分三:按键设计,这个设计一改传统电吹风按键食指前方操控,将按键分布在把手的侧面,采用大拇指操作。

Improvement of one : appearance bionic design, the whole hair-dryer hairdryer bionic "snakeheads" shape, and a hairdryer long-bian. so that the wind blowing out more focused.

改良部分一:外观上仿生设计,整个电吹风风筒仿生"蛇头"的造型,风筒长而扁,这样让吹出来的风更集中。

Methods 19 patients (25 feet) with hallux valgus were undergone surgical correction with improved Simmonds procedure.

对19例(25足)严重拇外翻畸形患者采用改良Simmonds术矫治。

Compartmentalization of Na~+ in vacuole is an important mechanism for plant, especially halophyte, to reduce the toxicity of Na~+.

自1983年第一株转基因植物的获得,开始了利用转基因技术改良植物种性的时代;1985年Horsh等人首创了叶盘转化法,使得农杆菌转化过程大为简化,从此植物基因转化研究得到迅速发展。

Methods HALS was used in 202 cases including 94 cases of hepatectomy, 29 cases of splenectomy, 28 cases of modified Sugiura procedure, 4 cases of combined hepatectomyand splenectomy, 41 cases of combined hepatectomy and choledocholithotomy, one case of combinedhepatectomy and total hysterectomy and 5 cases of combined splenectomy with choledocholithotomy.

对202例肝或脾外科疾病进行手助腹腔镜手术,包括肝切除94例,脾切除29例,改良Sugiura术28例,肝脾联合切除4例,肝子宫联合切除1例,肝切除加胆总管取石术41例,脾切除加胆总管取石术5例。

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她婉言拒绝了,但同意作为朋友相处。

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