Then analyse the effect about seepage coefficient of cushion blanket of concrete-faced rockfill dam foundation upon dam seepage flow,and give some suggestion on selecting seepage coefficient of concrete-faced dam foundation.

The gland shim is a sealing washer of the refrigerator compressor and before the compressor being assembled examination and grading of the gland shim s thickness is a key working procedure.

This paper introduces the application of single chip computer in the gland shim sorting and presents the main principle and the structure of the control system, and also illustrates the design of its hardware and its software.

The hazard of DEHP which is wildly used in the lid gasket in our country,the restriction regulation of the use of DEHP in lid gasket in other countries,and the substitute of DEHP used in lid gasket were introduced.