线条可直可弯，可以垂直，可以水平，也可以是对角线或呈Z形。
A line can be straight, curved, vertical, horizontal, diagonal, or zigzag.
本实用新型公开了一种主杆可弯折的伞，旨在提供一种结构简单、使用方便的主杆可弯 折的伞。
The utility model discloses an umbrella, the trunk of which could be bended, and aims to provide the umbrella with the bended trunk which is simple in structure and easy to use.
自主开发的拉弯式液压成排弯管机具有结构简单、可靠，可弯管屏形状复杂，还可校正管屏、造价低廉等特点。
Hydraulic type row tube bender is simple in structure, reliable which can bend and correct complicated platen with low cost.
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