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group 3
 group 3
telecom. 三类传真机
| facsimile apparatus
 facsimile apparatus
telecom. 传真机

to phrases
group 3 facsimile apparatus G3
telecom. 三类传真机一分钟传送一张 A4 文件
group 3: 6 phrases in 4 subjects
Aviation2
Physics1
Technology1
Telecommunications2