legal demi-gross weight

例句：

1. 1.The company's legal demi-gross weight limit is 50 kilograms.
   公司的法定半净重限制是50公斤。
2. 2. The shipment was subject to a legal demi-gross weight check.
   该货物需经过法定半净重检查。
3. 3. The manufacturer has increased the legal demi-gross weight of the product.
   制造商已提高产品的法定半净重。