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| Coal contains less energy per unit of weight than natural gas or oil it is difficult to transport, and it is associated with a host of environmental issues, among them acid rain. |
中文意思：
煤的单位能量含量低于石油和天然气，而且会导致包括酸雨在内的一系列环境问题。 |
以下为相关句子列表(点击查看，可以看对应的解释）：
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Coal and iron are minerals .
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煤和铁都是矿物. |
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Coal and oil are natural products.
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煤和石油是天然物产。 |
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Coal ash is mainly used in the fields of building materials, road engineering, construction engineering, agricultural application, environmental protection, fine chemical engineering, resources recycling, etc.
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粉煤灰主要被用于建筑材料、道路工程、建设工程、农业应用、环境保护、精细化工、资源回收等方面。 |
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Coal can be converted into gas by burning.
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通过燃烧煤可以转化成煤气。 |
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Coal can be converted to gas.
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煤可以转化成煤气。 |
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Coal contains less energy per unit of weight than natural gas or oil it is difficult to transport, and it is associated with a host of environmental issues, among them acid rain.
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煤的单位能量含量低于石油和天然气，而且会导致包括酸雨在内的一系列环境问题。 |
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Coal feeding: multi-tube system is used in coal feeding with the aim to even distribution of coal. Practical and reliable coal-level detector cooperates with stoker to realize automatic coal feeding.
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加煤段：采用多管分煤装置，使入炉煤在炉内得以均布，该段还配有实用可靠的煤位探测计，与加煤机配合完成自动加煤。 |
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Coal got scarce last winter.
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去年冬天煤变得很缺乏。 |
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Coal has the potential to contribute substantially to future energy supplies.
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煤具有对未来能量供应作出大贡献的潜力。 |
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Coal is China's “real strategic [energy] reserve”, says the Credit Suisse report, because it could all be sourced locally, rather than imported.
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瑞士信贷的报告称，煤炭是中国“真正的战略能源储备”，因为它可以从本地获得，不需进口。 |
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Coal is a fossil fuel.
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煤是一种矿物燃料。 |
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