圆珠笔的种类与特点：一次性与可换芯 一、一次性圆珠笔

一次性圆珠笔是最常见的圆珠笔类型之一，它是一种预先填充墨水的笔，使用完后无法再次填充或更换墨水。这种类型的圆珠笔通常价格低廉，使用方便，是日常书写和绘画的常用工具。

特点： 1. 价格便宜：一次性圆珠笔生产成本较低，价格相对较为便宜。 2. 使用简单：不需要额外添加墨水或更换芯子，方便使用。 3. 一次性使用：用完即弃，无需维护和保养。 二、可换芯圆珠笔 可换芯圆珠笔是一种可以更换墨水芯的笔，这种笔通常有一个金属或塑料的外壳，内含可更换的墨水芯。相比于一次性圆珠笔，可换芯圆珠笔可以节省成本，因为用户只需更换墨水芯而不需要购买新笔。此外，可换芯圆珠笔在环保方面也有一定优势。 特点： 1. 环保性：可以循环利用，只需要更换墨水芯即可。减少废笔杆对环境的污染。 2. 成本低：相较于一次性圆珠笔，用户只需要购买新墨水芯，长期使用下来成本更低。 3. 多样化：可以根据不同需求更换不同颜色或型号的墨水芯。 以上是关于圆珠笔的种类与特点的介绍，下面将其翻译成英文： Types and characteristics of ballpoint pens: disposable and replaceable refill

I. Disposable ballpoint pen

Disposable ballpoint pen is one of the most common types of ballpoint pens. It is a pen pre-filled with ink that cannot be refilled or changed after use. This type of ballpoint pen is usually inexpensive and easy to use, making it a common tool for daily writing and painting.

Characteristics: 1. Low price: Disposable ballpoint pens have a low production cost and are relatively inexpensive. 2. Easy to use: No need to add ink or replace the refill, making it convenient for use. 3. Single-use: Disposable after use, no maintenance and care required. II. Replaceable refill ballpoint pen The replaceable refill ballpoint pen is a pen with a replaceable ink refill. This pen usually has a metal or plastic shell, containing a replaceable ink refill. Compared with disposable ballpoint pens, replaceable refill ballpoint pens can save costs because users only need to replace the ink refill instead of buying a new pen. Additionally, replaceable refill ballpoint pens also have certain environmental advantages. Characteristics: 1. Environmental friendliness: It can be recycled and only needs to replace the ink refill, reducing the pollution of waste pen barrels on the environment. 2. Low cost: Compared with disposable ballpoint pens, users only need to purchase new ink refills, which will result in lower costs in the long run. 3. Diversity: Different colors or types of ink refills can be replaced according to different needs.