Components
投入 is an exact match with one form of the following word:
投入
BOOST
Reading : とうにゅう   
1. throwing into; inserting; depositing
2. investment; putting in (personnel, etc.)
3. release of a product
4. making (an electrical circuit)
My mastery:
My current mastery of 投入:
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My flashcards:
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Usefulness and usage:
Kanshudo usefulness level: 4 (among the 5,000 most useful words in Japanese)
• Kanshudo usefulness level is based on a usefulness score of 108,246 which gives a rank of 3,971
投入 is the most useful form. 1 additional form is shown below.
This word is a member of our collection of the 10,000 most useful words in Japanese:
• This form is almost always used
• Google Japan frequency rank: 5,000 (about 161,000,000 results)
• This form appears in Wikipedia's list of JLPT N1 vocabulary (see JLPT collections)
• Wikipedia most common 20000 words rank: 2878
• This form appears in the 24,000 words in the Mainichi Shimbun frequency analysis by Alexandre Girardi
• This form is in band 11 in the EDICT word frequency file (bands go from 1-48, where 1 is most common - each contains about 500 words)
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Example sentences:
てき
しん
へいりょく
兵力
とうにゅう
投入
した

The enemy flung fresh troops into the battle.
けいぶ
警部
もっと
けいかん
警官
とうにゅう
投入
できるようなるまで
じたい
事態
ひょう
さない
ようした
Sergeant, try to keep a lid on the situation until we can get more police down there.
リスクマネーハイリスクながらハイリターン
もと
める
とうし
投資
とうにゅう
投入
される
しきん
資金
こという
"Risk money" refers to funds placed in investments that seek high-return, although high-risk, investments.
とうにゅう
BOOST
My flashcards:
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Usefulness and usage:
• This form is rarely used
• Google Japan frequency rank: 161,000 (about 486,000 results)
• This form appears in the 24,000 words in the Mainichi Shimbun frequency analysis by Alexandre Girardi
• This form is in band 11 in the EDICT word frequency file (bands go from 1-48, where 1 is most common - each contains about 500 words)
VIEW INFLECTIONS
トウ   なげる to throw (something)   
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lance shaft   
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キ    table   
また again   
hand
ニュウ   い to enter   はい to enter   いれる to put in   
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