Experimental studies on the diameter of spray nozzle of the pre-chamber have been optimized.
在此基础上，对预燃室喷嘴直径进行了优化试验研究。
2
The effect of pressurized air supply system in the stairwell and pre-chamber pressure is better and can satisfy to the evacuation requirements.
对楼梯间和合用前室分别进行加压送风效果较好，能够满足疏散要求。
3
In May 2011, the Supreme Court decided in Chamber of Commerce v. Whiting that Arizona's employer sanctions law was not pre-empted because it promoted the objectives of federal law.