restoring force
復元力
Response amplitude operator
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/suto3/google.iconrestoring force
/suto3/Google画像検索.iconrestoring force
/suto3/Google定義検索.icon restoring force
/suto3/wikipedia.iconrestoring force
/suto3/weblio.icon restoring force
/suto3/kotobank.icon restoring force
/suto3/jisho.icon restoring force