gas sampling

例句：

1. 1.The engineer conducted a gas sampling test to determine the concentration of carbon dioxide in the atmosphere.
   工程师进行了一次气体采样测试，以确定大气中二氧化碳的浓度。
2. 2.During the inspection, the technician performed gas sampling to identify any potential hazards.
   在检查过程中，技术人员进行了气体采样，以识别任何潜在的危险。
3. 3. The company is required to conduct regular gas sampling to ensure compliance with safety regulations.
   该公司被要求定期进行气体采样，以确保遵守安全规定。