Tip: For spark in a backlit portrait or silhouette, try compositions that include the light source. This can drive your meter crazy, though, so bracket your exposures.
Tip: before equipment must be good backup important data of the original system. Transfer of personal data and backup hard drive in advance.
提示：设备前请必须备份好原系统的重要数据。主张提前转移个人资料并备份硬件驱动。
3
The shading network connected to thread USES an expression to drive the displacement threading and a ramp to prevent the threading from appearing on the head and the tip of the screw.