磨光机磨块采用金刚石磨料制成, 硬度极高,磨削锋利.The grinding block made of carborundum abrasive, is very hard and sharp.以修削平面为主,阐述了角向磨光机在机械加工中的运用.This text introduced the exertion of angle grinder for machinery manufacture.我们可以特别设计宝石磨光机,以符合你们...
In Africa, there are a lot of children suffering from severe malnutrition.在非洲有大批严重营养不良的孩子。The wrong chemical balance can cause severe distortion of the photographic image.化学药水不合比例可引致摄影图像的严重失真。Conclusions - Lack of cardio...