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鸣笛标
释义
鸣笛标
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水运交通指示
释
whistle board
鸣笛标
设在通航控制河段或上、下行船舶不能相互通视的急转弯的上下游两端河岸上,指示船舶鸣笛的水上助航标志。
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pyruvate
pyruvate formatelyase
pyruvate formatelyase (PFL)
pyruvate kinase
pyruvate kinase deficiency
pyruvic acid
Pythagoras
Pythagoras constant
Pythagoras crater
Pythagoras of Samos
Pythagoras of Samos (约公元前580—约前500)
Pythagoras theorem
Pythagoras tree
Pythagorean
Pythagorean closure
Pythagorean equation
Pythagorean extension
Pythagorean field
Pythagorean fraction
Pythagorean hodograph curve
Pythagorean-hodograph curve
Pythagorean means
Pythagorean numbers
Pythagorean ordered field
Pythagorean proposition
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