(subclass CartridgeHardDiskDrive HardDiskDrive) | ComputerInput.kif 756-756 | CartridgeHardDiskDrive 是 硬盘驱动器 的 subclass |
(subclass CartridgeHardDiskDrive DiskDriveWithRemovableDisks) | ComputerInput.kif 757-757 | CartridgeHardDiskDrive 是 DiskDriveWithRemovableDisks 的 subclass |