“countersinking”的概念、定义、翻译、参考文献-科学参考

单词	countersinking
释义	countersinking [`kau̇nt·ǝr´siŋk·iŋ] ^{MECHANICAL ENGINEERING} Drilling operation to form a flaring depression around the rim of a hole.
随便看	lentiginose lentil lentor Lenz's law Leo leo Leo II system Leo I system Leo Minor Leonardian Leon firedamp tester Leonids leonite leopard leopoldite Leotichidae Lepadomorpha LEPD leper Leperditicopida Leperditillacea Lepiceridae lepidine lepidoblastic Lepidocentroida

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