When it must fit a horizontal, narrow space, the winged disc is depicted without the human figure in the disc.
当它必须适应于水平，狭窄的地方，带翼的圆盘上并没有把人的外貌描绘在圆盘里。
Sulfuer content is an important performance figure of LPG. Without desulfurization, LPG would contaminate atmospheric air, adverse human health and threaten the downstream chemical production.
硫含量是LPG的一项重要质量指标，含硫lpg对环境、人体及下游化工生产都有危害。
Sulfuer content is an important performance figure of LPG. Without desulfurization, LPG would contaminate atmospheric air, adverse human health and threaten the downstream chemical production.
硫含量是LPG的一项重要质量指标，含硫lpg对环境、人体及下游化工生产都有危害。
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