The utility model discloses a heat recovery system, which relates to the recovery system.
本实用新型公开了一种热回收系统，涉及一种回收系统。
Disability policy in Germany is a policy which relates to about 10% of the German population.
德国的残疾政策涉及到德国大约10%的人口。
Metal material engineering science is an applied subject which relates to comprehensive knowledge.
金属材料工程是一门理工结合、涉及知识面较广的应用型专业。
The invention also relates to a method in which said media are used.
其次，本发明涉及利用这些介质的方法。
The invention relates to a hat which can indicate the direction.
本发明涉及一种能指示方向的帽子。
The invention also relates to a process in which the drying step is omitted.
本发明也涉及一种省略干燥步骤的方法。
The utility model relates to a hat which can be safely and cosily worn.
本实用新型涉及帽子，使套戴舒适安全。
The invention relates to a white board bracket, which belongs a physics teaching tool.
一种白板支架涉及一种物理学教学用具，具体为一种白板支架。
The invention relates to a long cap (1) which is designed to protect the hair.
本发明涉及一种为保护头发而设计的长帽(1)。
The utility model relates to a machine which belongs to the class of metal cutting.
本实用新型属于金属切削类机械。
The invention relates to a safe electric water heater which is used in any time.
一种安全的随开随用的电热水器。
A simple expression, which relates the temperature rise to the gas speed, the heat capac...
定量地给出了气体温度与放电功率、热容量流和气流速度的关系式。
A simple expression, which relates the temperature rise to the gas speed, the heat capac...
定量地给出了气体温度与放电功率、热容量流和气流速度的关系式。
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