英译汉 To produce strong X-rays the tube had to be made a very good vacuum. Dr. John Smith made a thousand and one explanations of this strange phenomenon of nature. They will mix freely with other organic compounds and are often soluble in organic solvents. Oxidation will make iron and steel rusty. Confined in a rigid container, gas will expand at high temperature. The chief effects of electric currents are the magnetic, heating and chemical effects.