But keeping the temperature of the welding tool constant proved to be a daunting problem, according to Abraham Katzir, head of Tel Aviv University's Applied Physics Department.

但特拉尔埃夫大学应用物理系主任亚伯汉姆·卡特齐尔表示焊接工具维持在一定温度一直是个难题。

A team led by Katzir developed a laser that can project a spot of infrared light, or heat, and at the same time precisely control the temperature of the targeted tissue.

而由卡特齐尔领导的这个小组发明了一种激光，既可投射出一个红外光点或热源，同时又能精确控制被加热组织的温度。