单词	ultramicrotome
释义	ultramicrotome noun ul·​tra·​mi·​cro·​tome ˌəl-trə-ˈmī-krə-ˌtōm  : a microtome for cutting extremely thin sections for electron microscopy ultramicrotomy ˌəl-trə-mī-ˈkrä-tə-mē  noun Word History First Known Use 1946, in the meaning defined above Medical Definition ultramicrotome noun ul·​tra·​mi·​cro·​tome -ˈmī-krə-ˌtōm  : a microtome for cutting extremely thin sections for electron microscopy
随便看	substitutionally substitutionary substitutions substitutive substitutively substorm substory substract substracted substracting substraction substractions substracts substrata substratal substrate substrates substratist substrative substratose substratosphere substratospheres substratospheric substratum substratums

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