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单词
okaite
释义
okaite
[ō`kā´īt]
PETROLOGY
An ultramafic igneous rock composed chiefly of melilite and haüyne, with accessory biotite, perovskite, apatite, calcite, and opaque oxides.
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utilization rate
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U-tube heat exchanger
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UV
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uvby system
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uviol glass
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V
VA
vac
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更新时间:2026/4/23 2:12:30