Provided is a thermoplastic resin composition having excellent thermal conductivity and high electrical insulating properties, and having excellent flexibility in comparison to ceramic molded bodies and thermoset resin compositions. The second electronic element includes a body having a cavity. Further, a page server connected to the Internet is disclosed. The user is requested to confirm a determined match. The monetary is then returned or holds from both entities from the Deposit Bank. Assuming that lateral magnification of the BD optical system is M1, lateral magnification of the HD DVD optical system is M2, a spot distance of three beams on BD-RRE is S1, a spot distance of three beams on HD DVD-RRW is S2 the guide groove pitch of BD-RRE is T1 and the guide groove pitch of HD DVD-RRW is T2, a setting is made to meet Formulas 1 and 2.