自发性球结膜下出血
bulbar subconjunctiva bleedings
嗜酸性球性肉芽肿
eosinophilic gastroenteritis
酸性球性白血病
eosinohilic cell leukemia
leukemia
eosinophilic
500hPa北半球极涡
500 hPa northern polar vortex
BQ型双偏心半球阀
BQ type double eccentric center half-ball Valve
N结半导体激光器
P-N junction semiconductor laser P