When I am tempering a piece of steel, I first heat it, hammer it, and then suddenly plunge it into this bucket of cold water.
当我锻炼钢铁的时侯，我先把它在炉中烧红，然后用铁锤锤它，又忽然把它投入一桶冷水中。
The protective measures against water hammer in hot-water heat-supply system are discussed from aspects of design and operation.
从设计和运行两方面探讨了热水供热系统的水击防护措施。
The utility model discloses a heavy hammer, in particular to an internal heat type heavy hammer of an anode vibration forming machine.
本实用新型公开了一种重锤，尤其涉及一种阳极振动成型机用的内热式重锤。
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