To truly get the end with the backset tapered the same as the straight end, I can't use a straight edge to draw the whole line.(這真的使得彎曲的逐漸變細喝直的一頭完全一樣。我不能使用筆直劃出全部線條。)

Resisting the balance backset current boiling point the ones that reduce and brake oil volatilize effectively.(搞平衡回流沸點，有效減少剎車油的揮發。)

The backset current extraction, ultrasonic-assisted extraction and microwave extraction were tested to select the optimum extraction and the quantitative analysis of specimen was made.(分別考察回流法提取法、超聲波萃取法及微波萃取法。選擇最優提取工藝，對樣品進行含量測定。)

The noise of the fan is mainly consist of circumrotatory noise and backset noise based on the theoretical analysis.(首先基于風機噪聲理論的分析確定了影響風機噪聲源的主要因素是旋轉噪聲和渦流噪聲。)