Hallen type integral

例句：

1. 1. The Hallen-type integrator is used to measure the amount of light entering a room.
   哈尔恩型积分器用于测量进入房间的光量。
2. 2. The Hallen-type integrator was developed by a team of engineers in the 1960s.
   哈尔恩型积分器是由一支工程师团队在20世纪60年代开发的。
3. 3. The Hallen-type integrator is widely used in various industries for its accuracy and reliability.
   哈尔恩型积分器因其准确性和可靠性而被广泛应用于各种行业。