单词	六角螺钉
释义	六角螺钉hex head screw
随便看	pressure pattern pressure pattern flight pressure pattern flying pressure pattern theory pressure, peak pressure pick-up pressure pickup pressure- pightness pressure piling pressure pipe pressure piping pressure pitman pressure plate pressure plate anemometer pressure-plate anemometer pressure plateau pressure plate flowmeter pressure plate； core end plate pressure pneumothorax pressure point pressure port pressure potential pressure pouring unit pressure precoat pressure precoat filter