petroleum cloud point tester

例句：

1. 1. This instrument isused to measure the cloud point of petroleum.
   这个仪器用于测量石油的云点。
2. 2. The petroleum cloud point tester was used to detect the presence of water in the crude oil.
   石油云点测试仪被用来检测原油中的水分。
3. 3.The petroleum cloud point tester has become an essential tool for analyzing the quality of petroleum products.
   石油云点测试仪已成为分析石油产品质量的重要工具。