Often INSTRUMENT manufacturers will specify a reference with a tight initial error so they do not have to perform room-temperature SYSTEMs calibration after assembly.
仪器制造商常常先规定基准严格的初始误差，以便组装后的室温系统无需进行校准。
2
Upon assembly, the spring is given an initial stretch.
在装配时预先给与弹簧初始拉长。
3
In addition, obtain initial quote, delivery and determine most effective method of assembly.