plug tap
(embryology) A mass of cells within a primordial embryo that will eventually develop into the distinct form of a fetus in most eutherian mammals.
A village in Hampshire, England, to the east of Basingstoke.
A screw-cutting tap with a slightly tapering end.
Without rancor.
アンティークのエンジンを修復するとき、整備士は摩耗した内ねじを慎重に切り直すために先端がわずかにテーパーしたねじ切りタップを使用した。
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