In Spring, tiny flowers called catkins blossom, then develop into acorns, which form inside a cap called a cupule.
在春天，一种叫做柔荑花科花的小花内部一个被状物的小帽子会发育成为橡树果。
2
Protect ends with capped self-locking washers incorporating a spring steel insert to ensure permanent retention of cap in exposed locations.
对外露端部的保护，可采用自锁螺帽加以弹簧垫，以确保螺帽持续牢固的预紧力。
3
The utility model relates to a door-handle component capable of changing rotation directions, comprising a handle, a cover cap, a spring, and a clamping ring.