正双折射 meaning in English
positive birefringence
Examples
- This rhomboid shaped crystal of calcium pyrophosphate , which appears bluish - white ( weak positive birefringence ) by polarized light with red plate
焦磷酸钙菱形结晶在红感光板偏振光下呈蓝白色（弱正双折射） 。
positive birefringence