## 球速 (Qiú sù)

**Description:**

This tag, “球速” in Traditional Chinese, refers to **baseball or softball pitch speed**. It can be used to categorize content related to:

* **Pitcher’s velocity:** Discussions about fastballs, curveballs, sliders, and other pitch types based on their speed.
* **Speed measurements:** Articles or videos detailing how to measure and analyze pitch speeds.
* **Training and improvement:** Content on how to increase pitch speed through training, technique adjustments, and equipment.
* **Related terms:** Articles about miles per hour (MPH), kilometers per hour (KM/H), and their conversion in the context of pitch speed.
* **Impact on gameplay:** Analyses on how pitch speed affects batting, fielding, and overall game strategy.

Essentially, this tag covers anything related to the measurement, analysis, and improvement of the ball’s speed when pitched in baseball or softball.