氨气是一种常用的化学物质，在工业生产和农业领域中广泛使用。然而，由于其具有高毒性和易燃性的特点，氨气在一定条件下可能成为重大危险源。其中一个重要的指标是氨罐的容量。

在许多工厂和企业中，氨气通常储存在氨罐中。氨罐的容量决定了储存和运输氨气的数量。如果氨罐的容量过大，意味着储存的氨气量也相应增加，这就增加了事故发生的风险。特别是在罐体结构或密封性方面出现问题时，可能会导致氨气泄漏或爆炸。因此，当氨罐容量超过一定范围时，我们必须将其视为潜在的重大危险源。

英文翻译对照：

The Determination of Major Hazard Source Based on Ammonia Tank Capacity

Ammonia gas is a commonly used chemical substance, widely used in industrial production and agriculture. However, due to its high toxicity and flammability, ammonia gas can become a major hazard source under certain conditions. One important indicator is the capacity of the ammonia tank.

In many factories and enterprises, ammonia gas is usually stored in ammonia tanks. The capacity of the ammonia tank determines the quantity of ammonia gas stored and transported. If the capacity of the ammonia tank is too large, it means that the amount of stored ammonia gas also increases, which increases the risk of accidents. Especially when there are problems with the tank structure or sealing, it may lead to ammonia gas leakage or explosion. Therefore, when the capacity of the ammonia tank exceeds a certain range, we must consider it as a potential major hazard source.