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难忘那缕羁绊
through-hole 通孔blind-hole 盲孔
凯利的心窝
通孔_百度翻译通孔 [词典] through-hole; [无脊椎] pylome; [例句]在连接块上的至少一个通孔带内螺纹。At least one of the through-holes in the block is internally threaded.
兰生幽荣
through hole
xuzhenying
通孔Through-hole盲孔blind-hole
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