7 Yi Jiang, te al. Leakage and blockage detection in water network of district heating system, ASHRAE Trans., 1996, 102P8贾晶，小区采暖热网调节和管理。[硕士论文]。北京：清华大学热能系，1992。
A: No, only a slight blockage of the vision at worst. Floaters are usually not detectable by visual testing unless they 不会的。最坏也就是微小障碍物的阻塞视觉。飞蚊者大多无法通过视觉测试发现。除非是非常严重的患者。
Alone the jade is produced in Nan Yang City Du Shan county, be well-known throughout alone the jade a lot of but after w独玉产于南阳独山，独玉经其色彩众多而闻名，所以独玉素有中华翡翠之称．近年来由于玉矿的封锁，禁止开采，独玉的价格更为昂贵，而带天蓝三色的料子更是独玉中最好的料子．所以珍藏一款好的独玉，是你的明智选择，所以独玉更具有收藏和升值的潜力．白独玉：总
Although some are used during heart bypa surgery, most coronary stents are i erted as a follow-up to angioplasty, a le i虽然也有一些被用于心脏搭桥手术，但大多数心血管支架用于血管成形术的后续治疗器械，这样可以使通过给气球充气从动脉内部清除动脉阻塞的过程更不易扩散。
Although some are used during heart bypass surgery, most coronary stents are inserted as a follow-up to angioplasty, a l虽然也有一些被用于心脏搭桥手术，但大多数心血管支架用于血管成形术的后续治疗器械，这样可以使通过给气球充气从动脉内部清除动脉阻塞的过程更不易扩散。