ֹҪ:ݻ;⡢ˮáƤȸֹߡһ˵˵ֹʹñʶ
1ijͷȼ(90)SAE30ij͡»ת2Сʱͺʹáʱ30Сʱһһ͡ʹǰλ
2ijͻʱ¶ȲӦ90ȡֹͣʱ1520Ӻȼͼע½Сڵ3ӺӦڲݵ£Ҫʱʹš
3ͻҪתڽ£Ӧͣ
4ͱȷࡣӦǸɾʵġ
5רҵԱõʱӦ˳ʱתȻʱת1.5 - 1.75ܡ