the present invention provides a composite pen which can yield two or more kinds of writing effects at its tip and can prolong the writing time and working life of both tips.
本发明提供一种,以本身功能就可在同一个书写笔端获得两种及两种以上书写效果的书写器具,并且还可延长其两端用笔书写时间及使用寿命的复合笔。
the mixer is used to mix two or more kinds of material by the mechanical force and gravity.
混合机是利用机械力和重力等作用,将两种或两种以上物料均匀混合起来的机械。
conclusions injection of two or more kinds of donor live cells may alleviate chronic rejection via decreasing of expressions of vegf and et-1 in the grafts.
结论经门静脉注射两种或两种以上供体活细胞可减轻慢性排斥反应,vegf、et-1的表达与血管硬化及纤维化程度呈正相关。
patients often had two or more kinds of the cancer occurred.
患者往往有两种或两种以上的癌肿发生。
an adsorption-expansion desorption method is presented for separating multicomponent gas mixtures to produce two or more kinds of high-purity component.
本文介绍了一种吸附膨胀脱附过程将多组份混合气分离成为二种以上纯组份。
vertical oar mixer is the machine used to mix two or more kinds of power materials evenly.
立式浆叶混合机是用来将两种或两种以上粉末物料混合为均匀混合物的机械。