c cm

The change content of soil organic C and N mainly occurred within soil depth of the 0-40 cm.

土壤有机C、N的含量变化主要发生在0-40cm土层。

C/ C composites with density as high as 1.74 g/ cm 3 were obtained within 3 hours by the new process. Carbon felt disk preforms have been densified in a liquid carbon source. The liquid precursors studied in the present work include CYH and KEE.

利用该技术，采用碳毡作预制体，以两种液态低分子有机物作碳源前驱体，沉积时间在3h内，沉积温度在900℃～1100℃范围内可获得密度达1.74g/cm3的C/C材料。

Fruit clavate, c. 1.5 cm long, 0.4 cm wide.

果棒状,长约1.5厘米, 宽0.4厘米.

The remnant polarization ( Pr) and effective dielectric constant ( Kef) is about 13 μ C/ cm 2 and 1 380 at 8V, respectively, it is most like PZT film on Pt.

8V时膜的有效介电常数Kef约1380，剩余极化强度Pr＝13μC／cm2，与Pt衬底上无明显差别。

In the experiment, the compacted clay liner systems in Columns A, ( 100% clay) Column C ( 10% zeolite+ 90% clay), achieved hydraulic conductivity values of the order 10-7 cm/ s which is the maximum limit permitted by most countries.

实验中，A柱（100%粘土）和C柱（10%沸石＋90%粘土）防渗系统的渗透系数均达到了大多数国家承认的10-7cm/s数量级的最低标准。