This device is a compressible chamber designed to inject a liquid medication through a plurality of needles. The processed voice information is transmitted to a remote data center. If a lost transmission event occurred, a data element can be associated with the lost transmission event grouping the first device and second device into a category. not carbide supported, form, and may be useful in heavy machining of cast irons. The optical disk is initialized using a UV lamp in order to initialize the recording layer of the phase-change optical disk capable of repeatedly writing information, without a separate optical head, whereby it is possible to increase productivity by remarkably reducing an initialization time of the optical disk since a large area is initialized using a UV beam.