“doughnut”的概念、定义、翻译、参考文献-科学参考

单词	doughnut
释义	doughnut [`dō´nǝt] ^NUCLEONICS 1. Also spelled donut. 2. The toroidal vacuum chamber in which electrons are accelerated in a betatron or synchrotron. Also known as toroid. 3. An assembly of enriched fissionable material, often doughnut-shaped, used in a thermal reactor to provide a local increase in fast neutron flux for experimental purposes. ^{PETROLEUM ENGINEERING} A ring of wedges or a threaded, tapered ring that supports a pipe string.
随便看	methyl oleate methylol riboflavin methylol urea Methylomonadaceae methyl ortho-benzoylbenzoate methylotrophic bacteria methyl palmitate methyl para-cresol methyl pelargonate methylpentene polymer methyl pentose methyl phenyl acetate methylphosphoric acid methyl propionate methyl propyl carbinol methyl red methyl red test methyl ricinoleate methyl salicylate methyl silicone methyl stearate methyl styrene methyl sulfate methyl sulfide methylsulfonic acid

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