<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.pili, ili kuunganisha kikamilifu metali kadhaa, joto pia ni muhimu sana, moto sana na baridi sana haiwezi, udhibiti mbaya kidogo utabadilisha hali, inayoathiri athari ya bidhaa iliyokamilishwa.  <response>: secondly, to fully fuse several metals, the temperature is also very critical, too hot and too cold can not be, a little bad control will change the state, affecting the effect of the finished product. 