They can be straight or bent or tapered to desired shapes to meet space requirements with maximum light transmission 可以是直条型或弯曲或锥型至任何所需之形状以符合机构设计时对空间的要求
2.
They can be straight or bent or tapered to desired shapes to meet space requirements with maximum light transmission 可以是直条型或弯曲或锥型至任何所需之形状以符合机构设计时对空间的要求