英 [daɪ'ɒptrə]
美[daɪ'ɒptrə]
n.测量高度及角度用的一种光学装置
dioptra的相关资料：
临近单词
DIFC
DI
Diboron organic compound
Dicranopteris taiwanensis
di-iso-amyl phthalate
Dihydroxyacetone synthase
di-quaternary exchanger
Dichlorophacinon ammonium
dichloro-dipropyl ether
dilating balloon catheter
Dicrateria zhanjiangensis
Dihydroxy Propoxy Guanine