发球区  beta probability distribution

发球区域  teeing ground

网球发球技术  Teaching of Tenns serve

球场区域  playfield detection

Blog社区发现  Blog community discovery

SEM（场发射扫描电镜）  SEM

web社区发现  Web community discovery

X射线激发发光  X-ray excited luminescence

X射线激发发光光谱  x-ray excited luminescence spectrum

x-射线激发发光光谱  x-ray excited luminescence spectrum

X射线激发发射  X-ray excited emission; X-ray excited luminescence

X射线激发发射谱  X-ray excited spectra

艾滋病高发区  High prevalence areas of AIDS

半球发射率  Hemispherical emissivity; total hemispherical emittance

棒球发展  Future direction of baseball

爆发错误中心  center of burst error

贲门癌低发区  low-incidence area

贲门癌高发区  high-incidence area

鼻咽癌高发区  high risky area of nasopharyngeal carcinoma