The two pieces being cemented together with a thin film of canada balsam . 再将这两块晶体用一层加拿大树胶薄膜粘合在一起。
2.
Any of several other fragrant plant resins , such as canada balsam 芳香脂植物其他几种芳香植物脂中的一种,如加拿大香脂
3.
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。