在Premiere中,下面_______不能在字幕中使用图形工具直接画出?
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一对标准斜齿圆柱齿轮传动,Z1=27,Z2=60,法面模数mn=3mm,螺旋角β=15°,试求两轮的分度圆直径和理论中心距,若将中心距取为135mm,而两轮的模数和齿数均不变,此时螺旋角β应为多少?
Among the Wuyue (Five Sacred Mountains) in China, Mount Huangshan is the best.
A. 对
B. 错
Mount Huangshan is famous for its landscape. There goes a saying, “People won’t watch any landscape after they come back from Huangshan.”
A. 对
B. 错