书签怎么制作

2025-02-11 16:16:37
推荐回答(4个)
回答1:

叶脉书签的制作

  叶脉标本可用做教具,由于标本美观,也常做书签使用,所以叶脉标本又称做叶脉书签。具体制作方法如下:

  (1)煮制法

  选择叶脉粗壮、细密、叶肉较厚的叶片备用。用一只烧杯盛清水200mL,水中放人碳酸钠5g、氢氧化钠7g,在火上加热。煮沸后把叶片投入杯中,大约煮沸10min。在此过程中,要用镊子轻轻摆动叶片,使叶片均匀地受到腐蚀。煮好后将叶片夹出,放人盛有清水的玻璃缸中,用软毛牙刷(最好是鬃牙刷)刷去叶片中叶脉以外的部分,露出叶脉,然后放人漂白液内漂自(即将8g漂白粉溶在40mL水里,再将6g碳酸钾溶在30mL沸水里,然后将两液混合、摇匀,冷却后加入100mL水,过滤后则成为漂白液)。漂白后,可根据需要将叶脉标本染成各种颜色。

  (2)腐烂法

  将上述适于制作叶脉标本的叶片放人水中浸泡,注意要将浸泡装置放在温暖处,以便利用细菌使叶片中叶脉以外的部分腐烂。以后的步骤同煮制法。水腐时应注意浸液发臭时要换水。此法制作时间长,但简便易行。
  B.如何制作树叶书签
  很多同学都喜欢书签,五颜六色,形式多样。有硬纸做的,有塑料做的,还有的是用树叶做的。很多同学尤其喜爱既别致又实用的树叶书签。要问叶片是怎样做成书签的?先把叶片的构造简单地介绍一下:
  叶片外表包围一层表皮细胞,它具有保护叶片的作用。表皮里面是一些含有叶绿粒能进行光合作用的叶肉组织。贯穿在叶肉组织间的是由输导组织和机械组织所组成的叶脉。
  叶脉书签就是除去表皮和叶肉组织,而只由叶脉做成。书签上可以看到中间一条较粗壮的叶脉称主脉,在主脉上分出许多较小的分支称侧脉;侧脉上又分出更细小的分支称细脉。这样一分再分,最后把整个叶脉系统联成网状结构。把这种网状叶脉染成各种颜色,系上丝带,即成漂亮的叶脉书签了。
  现在再介绍一下制作叶脉书签的全过程:通常采用革质的树叶,如桂花树的叶子、山毛榉科植物的叶子都可以。所采的树叶大小适当,不要有残缺,叶子老一点好,不要太嫩。叶子采来后放在烧杯里(如图1),加入10~15%氢氧化钠水溶液(把树叶浸没为止),加热煮沸10~15分钟(如图2),取出,平放在塑料纱网上,用自来水冲洗(如图3)。叶的表皮及叶肉组织经上述处理后便分散开,经自来水一冲就冲走了,留下来的便是网状叶脉。叶脉经漂洗之后,捞起平放在吸水纸上,压干压平,然后放在染料缸里染色。可以用多种染料进行染色(如图4)。红墨水、蓝墨水染色也很好。染色1~2小时,取出,平放在吸水纸上,压平压干。取出后,在粗的叶脉基部系上有色丝带,叶脉书签便做成了。

回答2:

格言书签制作流程:
1.首先要准备一张长方形的白卡纸和一张比较好看的花彩纸用来做书签,将花彩纸粘贴到白卡纸上,多余的部分裁剪掉。
2.粘贴裁剪好后用尺子辅助,在卡纸正面画上几根文字格。
3.然后在文字格上写上自己喜欢的一些名人名言。
4.最后用打孔器打上书签孔,穿上颜色比较搭配的书签线,名人名言书签就制作完成了。
格言书签:万般皆下品,唯有读书高!——孔子。书籍是青年人不可分离的伴侣和导师。——高尔基。养心莫若寡欲,至乐无如读书。——戚继光

回答3:

word怎么做书签?这个视频告诉你!办公软件实用技巧。

回答4:

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