本实用新型涉及一种燃气热水锅炉，是一种湿背式燃气热水铸铁模块锅炉。
The utility model relates to a gas-fired hot water boiler, in particular to a wet-back gas-fired hot-water modular cast iron boiler.
刚走一步，他踩在一块湿的地方，摔倒在地，他的背重重摔在陶瓷浴缸上。
He took one step, slipped on a wet spot, fell backward, and hit his back against the hard porcelain bathtub.
这似乎显示平背龟的龟卵比起其它种海龟卵，对于高温高湿有较高的容忍力。
Natator depressus eggs may be more tolerant of high incubation temperatures and severe moisture stress than those of most other sea turtle species.
大堤开裂的主要原因为背河侧放淤、淤背施工过快、湿化变形、排水不畅、堤顶堆载、车辆作用等。
The main factors are reinforcing dike with silt, construction in high speed, soak deformation, poor drainage, stacking load at the tip of dike, impact of vehicle and so on.
大堤开裂的主要原因为背河侧放淤、淤背施工过快、湿化变形、排水不畅、堤顶堆载、车辆作用等。
The main factors are reinforcing dike with silt, construction in high speed, soak deformation, poor drainage, stacking load at the tip of dike, impact of vehicle and so on.
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