buffer cap
常見(jiàn)例句
- The utility model is the cap which adds an earthquake prevention buffer of one circle (intermittent circle) to the circumference of the lower side of the cap.
“兒童學(xué)步帽”就是在帽的下邊周?chē)友b一圈（或斷續(xù)一圈）防震緩沖墊。
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