self.fracciones =Tabla(1, horizontalHeader=[True], stretch=False) self.fracciones.setItemDelegateForColumn(0, CellEditor(self)) lyt_Calc.addWidget(self.fracciones,2,1,1,2) lyt_Calc.addWidget(QtWidgets.QLabel(QtWidgets.QApplication.translate("pychemqt","Pressure lost")),3,1,1,1) self.delta...