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concave bit
释义
concave bit
concave bit
[
′kän‚kāv ‚bit
]
(design engineering)
A type of tungsten carbide drill bit having a concave cutting edge; used for percussive boring.
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blksize
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blkt
bl/l
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blla
bl lacertae object
bl lacertae objects
bl lac object
bl lac objects
bllc
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blld
blldb
bllf
b-lli
blli
bllip
bllp
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bllrf
bllrs
blltb
bllw
blm
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更新时间:2026/9/22 11:46:51