... 我们离开房间 到外面翻译公司玩 » We left the room to go outside to play video 油性笔 » Oil pen 珍妮是我们的朋友 » Jenny is our friend ...
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oil-based ink pen 油基墨笔
General signing pen, oil pen, ball pen.
普通签字笔，油性笔，圆珠笔。
The present invention provides a kind of oil film wet blackboard and its blackboard pen and blackboard roller erasing device.
本发明提供了一种油膜湿式黑板、黑板笔和黑板滚筒擦涂装置。
It is manufactured a follow sealant to neuter pen with synthetic oil and white carbon black, this sealant possesses good follow performance, and can satisfy the sealing requirement of neuter pen.
用合成油和白碳黑制备了一种中性笔随动密封剂，该密封剂有良好的随动性能，能满足中性笔的密封要求。
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