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.
Vitamin b12 is destroyed by oxidizing and reducing agents, by aldehydes, ascorbic acid, ferrous salts, vanillin and acacia . 维生素B12被氧化剂和还原剂、醛类抗坏血酸、二价铁盐、香草醛和阿拉伯树胶破坏。
3.
Covered or clogged with or as if with gum 涂有树胶的用或似乎用树胶覆盖或填充的
4.
Gums and mucilages are not distinguishable chemically 用化学的方法区分不出树胶和粘胶。
5.
An opaque pigment used when painting in this way 树胶水彩画颜料作这种画时所用的不透明颜料
6.
A painting executed in this manner 树胶水彩画用该种方法画成的画
7.
Consisting of or containing gum 树胶的由树胶组成的或包括树胶的
8.
Gum elastic bougie 弹性树胶探条
9.
Gums and mucilages 树胶和黏液
10.
Gum any substance that swells in water to form a gel or a sticky solution 树胶：是所有能够在水中膨胀形成凝胶或粘性溶液的物质的总称。
