发布网友
共1个回答
热心网友
摘要Now, pencil is widely used in our study and life. Now let's learn about the process of pencil invention.The first stage is the emergence of graphite pencil rod, which is still in the original stage of only meeting the requirements of writing. However, it is easy to fold and dirty. The improved graphite pencil rod is the earliest prototype of pencil. 咨询记录 · 回答于2021-11-16九年级下册第六单元英语作文,作文题目是铅笔的发明Now, pencil is widely used in our study and life. Now let's learn about the process of pencil invention.The first stage is the emergence of graphite pencil rod, which is still in the original stage of only meeting the requirements of writing. However, it is easy to fold and dirty. The improved graphite pencil rod is the earliest prototype of pencil. 感觉不行In the second stage, Monroe g a groove just suitable for the pencil lead in the middle of the thin wood strip. Put the pencil lead into the slot, and then align and bond the two wooden strips, which makes the first pencil rod in a modern sense. In the third stage, the birth of capped pencils. With the extensive use of pencils, there are many problems, such as unsanitary use, easy to break and difficult to carry, which have brought new challenges to the progress and development of the pencil instry, and pencils are still being optimized.你们要求多少字数80字,尽量是简单的句子,把铅笔的制作过程和用处写下来好的Now, pencil is widely used in our study and life. Now let's learn about the invention of pencil.First of all, the pencil is composed of a wooden strip and a pencil lead, which is placed in the middle of the wooden strip. Secondly, we need to record information with a pencil. We can not only draw pictures with a pencil, but also write. Finally, pencil is our good partner in learning.可以了吧
热心网友
摘要Now, pencil is widely used in our study and life. Now let's learn about the process of pencil invention.The first stage is the emergence of graphite pencil rod, which is still in the original stage of only meeting the requirements of writing. However, it is easy to fold and dirty. The improved graphite pencil rod is the earliest prototype of pencil. 咨询记录 · 回答于2021-11-16九年级下册第六单元英语作文,作文题目是铅笔的发明Now, pencil is widely used in our study and life. Now let's learn about the process of pencil invention.The first stage is the emergence of graphite pencil rod, which is still in the original stage of only meeting the requirements of writing. However, it is easy to fold and dirty. The improved graphite pencil rod is the earliest prototype of pencil. 感觉不行In the second stage, Monroe g a groove just suitable for the pencil lead in the middle of the thin wood strip. Put the pencil lead into the slot, and then align and bond the two wooden strips, which makes the first pencil rod in a modern sense. In the third stage, the birth of capped pencils. With the extensive use of pencils, there are many problems, such as unsanitary use, easy to break and difficult to carry, which have brought new challenges to the progress and development of the pencil instry, and pencils are still being optimized.你们要求多少字数80字,尽量是简单的句子,把铅笔的制作过程和用处写下来好的Now, pencil is widely used in our study and life. Now let's learn about the invention of pencil.First of all, the pencil is composed of a wooden strip and a pencil lead, which is placed in the middle of the wooden strip. Secondly, we need to record information with a pencil. We can not only draw pictures with a pencil, but also write. Finally, pencil is our good partner in learning.可以了吧