solid fuel heating system
... solid foundation 实体基础 solid fuel heating system 固体燃料加热系统 solid masonry 实心砌体 ...
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对油和固体燃料加热系统进行定期维护服务。
Perform scheduled maintenance service on oil and solid fuel heating systems.
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油和固体燃料加热技工安装和维护住宅及商业楼宇的石油，煤炭和木材取暖系统。
Oil and solid fuel heating mechanics install and maintain oil, coal and wood heating systems in residential and commercial buildings.
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