tonnage rating

例句：

1. 1. The ship's tonnage rating is an important factor in determining its size and capacity.
   这艘船的吨位评级是决定其大小和容量的重要因素。
2. 2.The tonnage rating of the cargo ship has increased significantly since it was built.
   这艘货船的吨位评级自建造以来已经显著提高。
3. 3.The tonnage rating of the new oil tanker is higher than that of its predecessor.
   新油轮的吨位评级高于其前身。