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单词 pentagrid
释义

Definition of pentagrid in English:

pentagrid

noun ˈpɛntəɡrɪd
Electronics
  • A thermionic valve having five grids; a heptode.

Origin

1930s; earliest use found in Wireless World. From penta- + grid.

Definition of pentagrid in US English:

pentagrid

nounˈpɛntəɡrɪd
Electronics
  • A thermionic valve having five grids; a heptode.

Origin

1930s; earliest use found in Wireless World. From penta- + grid.

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更新时间:2025/6/18 19:45:45