注射器外套应有足够透明度，能清晰地看到基准线。
The outer barrel of the syringe should be transparent enough; bench line can be seen distinctly.
一种吸附香烟有害物质透明的香烟过滤嘴，包括烟卷棒、过滤嘴滤芯、过滤嘴外套。
The invention discloses a transparent cigarette filter for adsorbing harmful substances in a cigarette.
一种吸附香烟有害物质透明的香烟过滤嘴，包括烟卷棒、过滤嘴滤芯、过滤嘴外套。
The invention discloses a transparent cigarette filter for adsorbing harmful substances in a cigarette.
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