ring forming machine

例句：

1. 1. This ring forming machine is used to make rings for jewelry.
   这台环形成型机用于制作珠宝的戒指。
2. 2. The ring forming machine has become a popular choice for wedding bands.
   环形成型机已成为婚礼戒指流行的选择。
3. 3. The ring forming machine is capable of producing high-quality rings with precision.
   环形成型机能够以精确度生产高品质的戒指。