Flight test is one of the four measures of the aeronautics research , used in the whole proceeding of research , design , appraisement , production and usage . and it is the most direct , the most accurate , the ultimo test measures 飞行试验是航空研究的四大技术手段之一，它贯穿于研究、设计、鉴定、生产和使用的全过程，是最直接、最准确、最终的试验手段。
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It is known that over the last few years the supreme master ching hai international association has participated in these public clean up events in areas like pyrmont , ultimo and part of the royal national park , and has been greatly commended by the local government 在过去几年清海无上师世界会曾在如pyrmont ， ultimo及部分的皇家国家公园等地参加公共清洁活动，并受到当地政府极力赞扬。
