PROBLEM TO BE SOLVED: To provide an optical pickup feeding mechanism capable of reducing the effect of the vibration of a lead screw on an optical pickup at the time of high-speed rotation, resistant to the disengaging of the lead screw from an engaging part caused by shocks, and highly ...
range. To obtain the heat resistance at high temp. of the catalyst, not only the presence of the multiple oxide above described is required but it is required that the catalyst component is in the form of PdO.赤間 弘新田 昌弘