Canada balsam A yellowish resin with similar optical properties to glass, used as a mounting medium for microscope slides.
Canada balsam A yellowish resin with similar optical properties to glass, used as a mounting medium for microscope slides.
加拿大树胶：一种黄色的树脂，和玻璃具有相似的光学特性，被用来作为显微镜载玻片的覆盖介质。