Ǯapp

      1. ʩô裿

        :2021-04-14 15:48:17:493

        ʩ죨constructionjointָڻҪʩҪֶν .Ļ֮γɵĽӷ.ʩ첢1ʵڵ""ֻȽʱĻ֮1ýͳ֮Ϊʩ.

        ʩӦڻĶ .ţȵ . .¥ñ.

        ƺ¥ĴʩӦڰ20mm30mm.ʱ².

        ǶڵʩӦƽڰĶ̱ߵκλ.

        ¥˳ŴʩӦڴм1/3ķΧ.

        ǽϵʩӦŶڹ1/3ΧҲݺǽĽӴ.

        ¥ϵʩӦ̤1/3.¥ݵĻע.Ϊ¥1Ϊֽ¥δעʱʩ죻Ӧ¥ݶм1/3λҪעӷӦбֱ¥߷.ʩдִԭǾɹ淶涨¥ʩм1/3δͳʩ .3ݶмʱǼ.ʩʱʩÿ2֧ģʱײѽλγɶʱ""ڹ.

        ˮسرڵʩڸ߳װ200mm500mm.

        ˫¥ . . . . .豸 .ռܼӽṹʩλӦҪ.

        ʩô裿 (/)  1

        Ƽ

        õվҳ

              1. Ǯapp