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has worked worked had worked works
14mgα－TE／d 140mgα－TE／d 1400mgα－TE／d 14mgβ－TE／d 140mgβ－TE／d
14mg α-TE／d 140mg α-TE／d 1400mg α-TE／d 14mg β-TE／d 140mg β-TE／d
TE英文全称是timeofecho TE为每次RF激发到回波采集的间隔时间 TE延长，信噪比降低 TE延长，T1权重增加 TE与信号强度成反比
14mgβ-TE/d 14mga-TE/d 1400mga-TE/d 140mga-TE/d 140mgβ-TE/d
TE（i，j） TE（i） TE（j） TE（n）
长TR，短TE 长TR，长TE 短TR，短TE 长TE 短TE
As soon as he received the telephone call, the doctor immediately drove to the house of the patient. The doctor did not receive the telephone call. The doctor had already known the accident before he came out of his house. The doctor just came to help the driver who met with the accident.
长TR，短TE 长TR，长TE 短TR，短TE 长TE 短TE
长TR，短TE 长TR，长TE 短TR，短TE 长TE 短TE
As; whom What; whom It; whose As; whose
easily hardly wisely widely
TE的英文全称是time of echo TE为每次RF激发到采集回波信号的间隔时间 TE延长，信噪比降低 TE延长，T1权重增加 TE与信号强度成反比
Knowing Known To know To have known
is famous for；is known for is famous for；is known as is famous as；is known as is famous as；is known for
Knowing To know Known To have known
has worked worked had worked works
长TR，短TE 长TR，长TE 短TR，短TE 长TE 短TE
14mgβ-TE/d 14mgα-TE/d 1400mgα-TE/d 140mgα-TE/d 140mgβ-TE/d
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