But the cleanliness of natural gas is largely based on its lower carbon dioxide emissions when burned.
但是天然气的清洁特性主要是基于其在燃烧时较低的二氧化碳排放量。
2
The influence factors of the surface cleanliness of cold-rolled sheet are introduced and the reasons and composition of the post-annealing black stain and edge carbon are mainly analyzed.
对冷轧板表面清洁度的影响因素进行了综述，并重点探讨了退火黑斑和边缘碳的组成和成因。
3
The impurity in the gasoline is to form the main components of carbon, so cleanliness higher gasoline form carbon trend is weak some.