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whirling arm
 whirling arm
CNC 旋转杆
| test
 test
gen.
archit. 试 验; 测验; 检査; 准则; 试验品; 试验方法

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whirling arm
CNC 旋转杆
space 旋转臂
whirling arm test
: 4 phrases in 3 subjects
Aviation1
Space2
Sports1