104km
3.GSCC-High-Mountain-Soils, typical soils with a total area of 197.8×104km^2, can be sorted into 4 CST Orders, Cambosols (50.2%), Aridosols (29.8%), Primosols (15.1%) and Isohumosols (4.9%), and further into 11 CST Groups and 19 CST Subgroups, making referencing so complicated that there is no one-to-one referencing relationship, due to the fact that the 2 soil classification systems are absolutely different.
4.The reflection wave Pm on Moho discontinuity in 104-180km is 7-10 times greater than Pg wave.
5.Above all, recommend performance characteristic of 120 type wangon control valve and 104 type carriage distribute valve mostly used at home now, put up application analysis to 120 type wangon control valve and 104 type carriage distribute valve, account for both 120 type wangon control valve and 104 type carriage distribute valve cannot meet requirement of 160km/h rapid speed wangon braking, bring forword to the basic function of the control valve taked on to suit to our domestic 160km/h rapid speed wangon 。
7.From 1969 to 1975, the creeping fault underneath Tangshan strikes 47° NE, dipping 87°toward SE, right-lateral normal fault in character. Its length is 8 km, width 6 km, depth of burial 2 km, strike and dip slips amount, to 104 cm and 8 cm respectively, average rate of strain accumulation; 0.9×10-7/year.

