transitional是什么意思？

transitional

例句

• Missing until recently were fossils clearly intermediate, or transitional, between land cetaceans. 近期发现的化石已经可以很清晰地帮助人们了解这个问题, 以及他们之间的过渡关系.
• Transitional metals ( Fe 3 + ) play an extremely important role in catalyzing CLA oxidation. 变价金属离子 ( Fe~(3+ ) )能够促进共轭亚油酸氧化.
• Except for the transitional elements, valency electrons are in the outermost electron shell. 除去过渡元素外, 价电子位于最外面的电子层.
• Ovarian malignant Brenner Tumors ( MBT ) and transitional cell carcinoma ( TCC ) are rare primary ovarian carcinomas. 卵巢恶性Brenner氏瘤 ( MBT ) 和移行细胞癌 ( TCC ) 是两类少见的卵巢原发癌.