기업신용평가등급 문제가 발생한 3가지 이유 (그리고이를 해결하는 방법) )
http://keeganggcy143.yousher.com/gieobsin-yongpyeong-ga-keonseolting-san-eob-eseo-haji-mal-aya-hal-il
These contain the development of synthetic organs and joints, as well as devices that control system features, imaging systems like X-ray and ultrasound, along with the laser units used in corrective eye surgery.