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Sentence
Span Details
電子光学
electron opticsnoun
は
topic markergrammar
電子顕微鏡
electron microscopenoun
の
possession, attribution, nominalizer, or nominal linkergrammar
設計
plan; design; layoutnoun, suru verb
に
direction, time, indirect object, or target markergrammar
不可欠
indispensable; essential; vitalna-adjective, noun
な
adnominal form of the copula after a na-adjectivegrammar
分野
field; area; domain; branchnoun
だ。
plain copulagrammar