《渐开线花键联结》国家标准(GB1104—72),已经中国科学院批准颁布。我部拟直接贯彻这项国家标准,不再另行编制部标准。贯彻的原则是:凡新机种必须贯彻;老机种凡有条件的也应尽量贯彻。 “Involute spline connection” national standards (GB1104-72), has been approved by the Chinese Academy of Sciences promulgated. The ministry intends to directly implement the national standard, no separate departmental standards. The principle of implementation is: Where the new aircraft must be implemented; the old aircraft where the conditions should be implemented as far as possible.