修正格式、知识错误，添加课本图像

Author: HowCam

docs/physics/senior/XB-3/U1-5.md

@@ -20,9 +20,7 @@
 - 大多数分子速率接近某个中间值
 - 速率很大和很小的分子都很少
 
-速率分布函数图像呈**倒钟形**曲线，形状类似于正态分布曲线：
-
-![麦克斯韦速率分布曲线](https://quickchart.io/chart?c=%7B%22type%22%3A%22line%22%2C%22data%22%3A%7B%22labels%22%3A%5B%220%22%2C%22500%22%2C%221000%22%2C%221500%22%2C%222000%22%2C%222500%22%2C%223000%22%5D%2C%22datasets%22%3A%5B%7B%22label%22%3A%22f%28v%29%22%2C%22data%22%3A%5B0%2C0.8%2C1%2C0.6%2C0.2%2C0.05%2C0.01%5D%2C%22fill%22%3Atrue%2C%22borderColor%22%3A%22%234cc9f0%22%2C%22backgroundColor%22%3A%22rgba%2876%2C201%2C240%2C0.2%29%22%2C%22tension%22%3A0.4%7D%5D%7D%2C%22options%22%3A%7B%22title%22%3A%7B%22display%22%3Atrue%2C%22text%22%3A%22%E9%BA%A6%E5%85%8B%E6%96%AF%E9%9F%A6%E9%80%9F%E7%8E%87%E5%88%86%E5%B8%83%E7%94%B5%E8%B7%AF%22%7D%2C%22scales%22%3A%7B%22xAxis%22%3A%7B%22title%22%3A%7B%22display%22%3Atrue%2C%22text%22%3A%22%E9%80%9F%E7%8E%87%20v%20%28m%2Fs%29%22%7D%7D%2C%22yAxis%22%3A%7B%22title%22%3A%7B%22display%22%3Atrue%2C%22text%22%3A%22f%28v%29%22%7D%7D%7D%7D%7D)
+速率分布函数图像呈**倒钟形**曲线，形状类似于正态分布曲线.
 
 !!! note "速率分布规律"
     - 温度升高时，分子速率整体增大，分布曲线向右移动
@@ -34,10 +32,12 @@
 
 当温度改变时，速率分布曲线会发生变化：
 
-![不同温度下的速率分布曲线](https://quickchart.io/chart?c=%7B%22type%22%3A%22line%22%2C%22data%22%3A%7B%22labels%22%3A%5B%220%22%2C%22500%22%2C%221000%22%2C%221500%22%2C%222000%22%2C%222500%22%2C%223000%22%5D%2C%22datasets%22%3A%5B%7B%22label%22%3A%22%E9%AB%98%E6%B8%A9%20T1%20%28%E5%B3%B0%E5%80%89%E9%80%9F%E7%8E%87%E5%A4%A7%29%22%2C%22data%22%3A%5B0%2C0.05%2C0.2%2C0.5%2C1.0%2C0.7%2C0.3%5D%2C%22fill%22%3Afalse%2C%22borderColor%22%3A%22%23ef476f%22%2C%22tension%22%3A0.4%7D%2C%7B%22label%22%3A%22%E4%BD%8E%E6%B8%A9%20T2%20%28%E5%B3%B0%E5%80%89%E9%80%9F%E7%8E%87%E5%B0%8F%29%22%2C%22data%22%3A%5B0%2C0.3%2C1.0%2C0.8%2C0.3%2C0.08%2C0.02%5D%2C%22fill%22%3Afalse%2C%22borderColor%22%3A%22%2306d6a0%22%2C%22tension%22%3A0.4%7D%5D%7D%2C%22options%22%3A%7B%22title%22%3A%7B%22display%22%3Atrue%2C%22text%22%3A%22%E4%B8%8D%E5%90%8C%E6%B8%A9%E5%BA%A6%E4%B8%8B%E7%9A%84%E9%80%9F%E7%8E%87%E5%88%86%E5%B8%83%E6%9B%B2%E7%BA%BF%22%7D%2C%22scales%22%3A%7B%22xAxis%22%3A%7B%22title%22%3A%7B%22display%22%3Atrue%2C%22text%22%3A%22%E9%80%9F%E7%8E%87%20v%20%28m%2Fs%29%22%7D%7D%2C%22yAxis%22%3A%7B%22title%22%3A%7B%22display%22%3Atrue%2C%22text%22%3A%22f%28v%29%22%7D%7D%7D%7D%7D)
+![不同温度下的速率分布曲线](imgs/P1-5-4.jpg)
 
 !!! note "不同温度下图线所围面积的关系"
-    **无论温度如何变化，速率分布曲线与横轴所围成的总面积始终等于1（即100%）。**
+    **无论温度如何变化，速率分布曲线与横轴所围成的总面积始终等于总分子数。**
+
+如果图像纵轴变为“各速率区间的分子数占总分子数的百分数”，则速率分布曲线与横轴所围成的总面积始终等于1（即100%）。
 
 这一结论的物理意义：
 

docs/physics/senior/XB-3/U2-1.md

@@ -13,9 +13,12 @@
 | 熔点 | 有确定的熔点 | 没有确定的熔点 |
 
 !!! note "晶体的分类"
+
     晶体分为**单晶体**和**多晶体**：
+
     - **单晶体**：由一个晶粒组成，具有规则外形（如食盐晶体、冰）
-    - **多晶体**：由多个晶粒组成，没有规则外形（如金属），但仍具有确定的熔点
+
+    - **多晶体**：由多个晶粒组成，没有规则外形（如金属），具有各向同性，但仍具有确定的熔点
 
 !!! example "常见的晶体"
     - **单晶体**：食盐、云母、冰、金刚石、单晶硅

docs/physics/senior/XB-3/U2-3.md

@@ -48,10 +48,6 @@ $$T = t + 273.15 \text{ K}$$
 !!! note "理想气体温标"
     理想气体温标利用气体压强或体积随温度变化的线性关系定义温度，与气体种类无关，是一种科学的温标。
 
-### 热力学第一定律
-
-温度、压强、体积是描述气体状态的三个基本参量，它们之间的关系由**理想气体状态方程**决定。
-
 ???+ question "自我评价"
 
     1. 判断：温度是物体分子平均动能的标志。（    ）

docs/physics/senior/XB-3/U2-4.md

@@ -13,9 +13,13 @@
 ### 实验装置
 
 实验装置包括：
+
 - **注射器**：改变气体体积
+
 - **压强传感器**：测量气体压强
+
 - **温度传感器**：监测气体温度（保持不变）
+
 - **数据采集器**：记录数据
 
 ### 实验步骤