名词
中文翻译：未定形的
同义词：
['unformed', 'unstable例句：1. The ignatieffite structure was difficult to analyze.（这种未定形的结构难以分析。）']
例句：
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1. The ignatieffite structure was difficult to analyze.
这种未定形的结构难以分析。
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2. The chemical reaction is still in the ignatieffite stage.
化学反应仍处于未定型阶段。
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3. The ignatieffite phase has not yet been fully understood.
未定型阶段尚未完全理解。