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had been donated was donated have donated were donated
has been offered have been offered are offered is being offered
has been have been is being are being
the radio apparatus fitted on the portside the radio with a portable equipment the radio equipment which is easily movable the portable radio with some apparatus"
Nu＝f（Re，Pr） Nu＝f（Gr，Pr） Nu＝f（Re，Gr，Pr） Nu＝f（Bi，Fo）
has been offered have been offered are offered is being offered
A. were sent was sent have sent had been sent
ν=ν0cosa，α=g ν=ν0，α=g ν=ν0sina，α=-g ν=ν0，α=-g
has been offered have been offered are offered is being offered
A. were sent was sent have sent had been sent
has been offered had been offered is being offered is offered
nuu（♂）×nuu（♀） nu/+（♂）×nuu（♀） nuu（♂）×nu/+（♀） nu/+（♂）×nu/+（♀）
input output peripheral electronic
has been have been is being are being
has been offered have been offered is being offered are offered
had been donated was donated have donated were donated
has been offered have been offered is being offered are being offered
ν正比于J ν反比于J ν正比于J的平方 ν反比于J的平方
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