微量要素
びりょうようそ
- micronutrient n
びりょうようそ
ビ
かす.か
delicate; minuteness; insignificance
リョウ
はか.る
quantity; measure; weight; amount; consider; estimate; surmise
ヨウ
い.る • かなめ
need; main point; essence; pivot; key to
ソ • ス
もと
elementary; principle; naked; uncovered