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1·It seems I've never seen this kind before. Is it a gas water heater.

我好像以前从未见过这个样子，这是燃气热水器还是电加热热水器呢？

2·The article also explains design calculation method of gas water heater.

并对燃气热水器的设计计算方法进行了论述。

3·The use of gas water heater safety problem has been our most important question.

而燃气热水器的运用安全疑问一直是我们最重视的疑问。

4·An initial investigation showed a gas water heater could have caused the accident.

经警方初步调查，死亡原因疑为热水器煤气中毒。

5·The thermal balance and thermal efficiency of domestic gas water heater are analyzed.

对家用燃气热水器的热平衡及热效率进行分析。

6·Four, brand, gas water heater brand is very much, here are a few simple list for reference.

品牌，燃气热水器的品牌非常之多，这里简单罗列几种以供参考。

7·Gas water heater cleaning and maintenance services is still the first choice for many consumers.

燃气热水器清洁养护效劳仍是很多消费者的首选。

8·The solar-assisted gas water heater can effectively utilize solar energy and save gas resources.

具有能有效地利用太阳能，节约燃气资源等特点。

9·The condensing gas water heater is more expensive than conventional gas water heater for consumers.

与普通燃气热水器相比，冷凝式燃气热水器对于消费者价格偏高。

10·With the gas water heater as heat source, low temperature floor radiation heating of dwelling is introduced.

介绍了对民用住宅，以燃气热水炉为热源，采用低温地板辐射采暖技术。