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that it is set to remove fine impurities and dust. Small pieces of sticks, stones, sand,
and dust are sifted away and light impurities such as wheat chaff are removed by
air current.
The next operation involves magnetic separation to remove bits of metal
which may have found then way into the wheat mix. Although aspiration is
provided in the first sifting machine, there is usually a second aspiration and
possibly more as the wheat passes through the cleaning house. No aspiration is
totally efficient, so in order to do an adequate job, several treatments are necessary.
Words to remember
1 it is withdrawn – оно (зерно) берется из ...
2 prior to – до (перед)
3 since – т. к.
4 whatever – какая бы
5 loose foreign material – свободный инородный материал
6 to adhere – приминать, приставать
7 is done last using – делается последним с использованием ...
8 friction – растирание
9 aspiration – всасывание, провеивание
10 silo – зернохранилище
11 bits – отмершие плоды
30
that it is set to remove fine impurities and dust. Small pieces of sticks, stones, sand,
and dust are sifted away and light impurities such as wheat chaff are removed by
air current.
The next operation involves magnetic separation to remove bits of metal
which may have found then way into the wheat mix. Although aspiration is
provided in the first sifting machine, there is usually a second aspiration and
possibly more as the wheat passes through the cleaning house. No aspiration is
totally efficient, so in order to do an adequate job, several treatments are necessary.
Words to remember
1 it is withdrawn – оно (зерно) берется из ...
2 prior to – до (перед)
3 since – т. к.
4 whatever – какая бы
5 loose foreign material – свободный инородный материал
6 to adhere – приминать, приставать
7 is done last using – делается последним с использованием ...
8 friction – растирание
9 aspiration – всасывание, провеивание
10 silo – зернохранилище
11 bits – отмершие плоды
30
