我是熊猫新手。有什么办法可以将这两个数据帧合并为以下结果
DataFrame1：-
|-------------|---------|----------------------|-------|
|Test Case | SubTest | App | Count |
| geekebench5 | OpenCL | geekbench_x86_64.exe | 1.0 |
| geekebench5 | OpenCL | geekbench_x86_64.exe | 1.0 |
| geekebench5 | Vulkan | geekbench_x86_64.exe | 1.0 |
| geekebench5 | cpu | geekbench_x86_64.exe | 2.0 |
| geekebench5 | cpu | geekbench_x86_64.exe | 1.0 |
| geekebench5 | cpu | geekbench_x86_64.exe | 1.0 |
| geekebench5 | cpu | geekbench_x86_64.exe | 1.0 |
| geekebench5 | cpu | Process | 1.0 |
|-------------|---------|----------------------|-------|
DataFrame2：-
|-------------|---------|----------------------|-------|
|Test Case | SubTest | App | Count |
| geekebench5 | OpenCL | geekbench_x86_64.exe | 2.0 |
| geekebench5 | Vulkan | geekbench_x86_64.exe | 1.0 |
| geekebench5 | cpu | geekbench_x86_64.exe | 2.0 |
| geekebench5 | cpu | geekbench_x86_64.exe | 1.0 |
|-------------|---------|----------------------|-------|
DataFrame结果：-
|-------------|---------|----------------------|---------|---------|
|Test Case | SubTest | App | Count_x | Count_y |
| geekebench5 | OpenCL | geekbench_x86_64.exe | 1.0 | 2.0 |
| geekebench5 | OpenCL | geekbench_x86_64.exe | 1.0 | NaN |
| geekebench5 | Vulkan | geekbench_x86_64.exe | 1.0 | 1.0 |
| geekebench5 | cpu | geekbench_x86_64.exe | 2.0 | 2.0 |
| geekebench5 | cpu | geekbench_x86_64.exe | 1.0 | 1.0 |
| geekebench5 | cpu | geekbench_x86_64.exe | 1.0 | NaN |
| geekebench5 | cpu | geekbench_x86_64.exe | 1.0 | NaN |
| geekebench5 | cpu | Process | 1.0 | NaN |
|-------------|---------|----------------------|---------|---------|
使用左操作进行合并没有帮助。行数没有增加，它代替了NaN，而是输入了上一行的值