在下流式反应器内的裂化反应之后，分离反应产物，并将废催化剂引导到汽提与再生部分。
After the cracking reaction in downflow reactor, reaction products are separated and spent catalyst is directed to stripping and regeneration sections.
可再生能源只占全球主要能源消耗的一小部分，化石能源仍然占主导地位——煤炭和石油各占30%，天然气占25%。
Renewables account for only a small share of global primary energy consumption, which is still dominated by fossil fuels—30% each for coal and oil, 25% for natural gas.
大部分的石灰岩和砂岩的蓄水层都是深而广的，但可能含有不可再生的地下水。
Most limestone and sandstone aquifers are deep and extensive but may contain groundwaters that are not being recharged.
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