盖氏计量器

例句：

1. 1. The Gei-Jen Measuring Device is widely used in various fields.
   盖氏计量器在各个领域都有广泛的应用。
2. 2. This Gei-Jen Measuring Device can accurately measure the length of a rope.
   这个盖氏计量器可以准确测量绳子的长度。
3. 3.The Gei-Jen Measuring Device is easy to operate and has a high accuracy rate.
   盖氏计量器操作简单，精度高。