for improving need assembling the casing head, the cutting casing pipe on project, we have designed the device of cutting casing head to change unfavorable factors using acetylene gas to cut case.
acetone is charged into the cylinder and completely fills the pores of the filler material. acetone is the solvent which will dissolve the acetylene gas charged into the cylinder.
丙酮被充入钢瓶,彻底填满填充物材料的孔道。它是溶剂,能够溶解充入钢瓶的乙炔气体。
the status of vcm and acetylene gas recovery by pressure swing adsorption in vinyl chloride production units were introduced.
介绍了在氯乙烯生产装置中,采用变压吸附工艺回收精馏尾气中的vcm和乙炔气的情况。
the acetylene gas generated by calcium carbide can be applied to weld or cut metal materials.
同电石发生乙炔作金属切氰和焊接。
the merits of the acetylene gas and the defects of new type of welding gas are completely mixed together on the aspect of theory and practice .