4城市土壤与生物群落 4.1城市的土壤 1城市化对土壤的影响及城市土壤特点 城市发展与建设导致形成废墟式土壤这类土壤较利于植物根系伸展,但养分布不均;通气良好,但土体甚为干燥城市道路交通使其两侧土壤性质发生改变瓦砾、砖、砂、混凝土等建筑废料多pH值高,铅金属含量大,紧实度增加

作业一: 1.在立方晶系的晶胞内画出具有下列密勒指数的晶面和晶向: (11)n12,(10与[1],(132)与[123 2.在立方晶系的一个晶胞中画出(111)和(112)晶面,并写出两晶面交线的晶向指数。 3.立方晶系的(111),(110),(123)晶面族各包含多少晶面,写出它们的密勒指数

Revision of unit 6 工. Expressions Directions: Turn the following English terms into Chinese without /ooking at your textbook 1. Superior quality/inferior quality 2. Customary quality /ordinary quality

Revision l Expressions Directions: Turn the following English terms into Chinese without looking at your textbook 1 advance payment/ Cash in advance 2 defer payment 3 initial payment 4 Documentary letter of credit

Revision: I. Expressions Directions: Turn the following English terms into Chinese without looking at your textbook 1. market slump 2. market boom 3. market share 4. market fluctuations 5. strong market

Revision: I. Expressions Directions: Turn the following English terms into Chinese without looking

Revision L. Expressions Directions: Turn the following English terms into Chinese without looking at your textbook 1. Country of origin mark 2. Quality mark 3. Grade mark 4. Weight mark

Revision: Expressions Directions: Turn the following English terms into Chinese without looking at your textbook 1. skimming price 2. market price 3. basis price

1、看懂基本交流放大、了解其元件作用并有数量级概念 2、了解图解法,掌握微变等效电路分析法

一、名词解释(2/20) 1.受体2.细胞培养3.信号转导4.细胞学说5.应力纤维6.磷脂转换蛋白7ES细胞8嵌 合体9交叉10 Hayflick界限