出生前后
period from prenatal to postnatal
出生前后铅暴露
pre-and postnatal lead exposure
光谱辐射出射度
spectral radiant exitance
spectral irradiance
红外辐射出射度
infrared radiation energy
积分球出射照度
output illuminance of integrating sphere
掠出射X射线荧光
grazing-exit X-ray fluorescence
染色体异常胎儿出生前检查
Antenatal screening for chromosomal anomalies