The Tianjin Pharmaceuticals Corporation (TJPC) is a national designated large first-grade enterprise, a scientific research, production and export base for cort
Self-drilling screw bolts are a new product to replace ordinary screw bolts, and thus raise working efficiency ten times and reduce the cost of installation. Ac
【正】 Collective states in the neutron-rich Sr isotopes with A=98,100 are studied inthe SU(3) limit of the interacting boson model.It is found that the spectrum
1.Key components of cars In accordance with the policy of highstarting point,specialization,large-scaleproduction and high quality,there will be 60key component