bead tube

例句：

1. 1.The bead tube is a popular jewelry accessory.
   珠管是一种受欢迎的珠宝配件。
2. 2.The bead tube was used to connect the two ends of the necklace.
   珠管用于连接项链的两端。
3. 3. The bead tube is made of glass and can hold up to 100 beads.
   珠管由玻璃制成，可容纳多达100个珠子。