
    ʪװ
    ʪװҹʯʯװʩĴͳӼṹêӹ̶ˮɰ϶ʩװ
    (1) װê̷ɷΪ¼ͣ
     ڽṹǽԤê̼Ӹֽʯϡ¶ףӼêҡͼ
     ڽṹǽϺڴľШêõĸǽֽö̶ľШϣʯ¶ףӼʯڸֽϹҵİװǹ㶫Ĵͳͼ
     ṹǽ治ֽڽṹǽɺǽϰʯêҵӦλбףʯףȴǽṹֱӣǽбĦêҡ
     ǽԤ6mmֱֽֽʯ屳Ϸû֬ճҹ(ҹ2mmְƳ)êڸֽê̡
    (2) ʯ״۵ʽбסţǿסֱס
    (3) ע
     ʯӼλã ӦãٽӷĿȡ
      êõӦ⴦ò߻ͭߣֹӼʴӰװĹ۸Ч
     ʯ尲װ̶Ӧ1:2.5ˮɰֲ죬 ÿע߶15-20cmɰϹעϲɰ
 ɰʩӷ죬Ӧˮƽӷ510cmԱ°֮Ӽʹɰӷӡ

