mask inspection densimeter

例句：

1. 1. The mask inspection densimeteris used to measure the effectiveness of masksin preventing the spread of COVID-19.
   口罩检查密度计用于测量口罩在预防COVID-19传播中的效果。
2. 2.The new model of the mask inspection densimeter has been developed to improve itsaccuracy and reliability.
   新型的口罩检查密度计模型已经开发出来，以提高其准确性和可靠性。
3. 3. The maskinspection densimeter wastested on a large sample ofpeople, and the results showed thatit could effectively reduce the risk of infection.
   口罩检查密度计在大量人群中进行了测试，结果显示它可以有效地降低感染风险。