Ó²¶Èµ¥Î»ÓÐÄÄЩ?

ÒÔ0.002ºÁÃ××÷Ϊһ¸öÓ²¶Èµ¥Î»¡£µ±HB>450»òÕßÊÔÑù¹ýСʱ£¬²»ÄܲÉÓò¼ÊÏÓ²¶ÈÊÔÑé¶ø¸ÄÓÃÂåÊÏÓ²¶È¼ÆÁ¿¡£ËüÊÇÓÃÒ»¸ö¶¥½Ç120°µÄ½ð¸ÕʯԲ׶Ìå»òÖ±¾¶Îª1.59¡¢3.18mmµÄ¸Ö...


Ó²¶ÈHRC¡¢HB¡¢HV¸÷´ú±íʲôÒâ˼?

1¡¢HRCÊDzÉÓÃ150KgÔغɺÍ120¡ã½ð¸Õʯ׶ѹÈëÆ÷ÇóµÃµÄÓ²¶È£¬ÓÃÓÚÓ²¶È¼«¸ßµÄ²ÄÁÏ¡£ÀýÈ磺´ã»ð¸ÖµÈ 2¡¢HBÊDz¼ÊÏÓ²¶È£¬ÒÔÒ»¶¨µÄÔغɣ¨Ò»°ã3000kg...


js+css3»î¶¯Ò³ÃæÈ«ÆÁºì°üÓ궯»­ - °Ù¶È¾­Ñé

createElement('div'); var image = document.createElement('img'); image.src ='images/hb/petal'+ randomInteger...


ÓÐÄÄЩ³ÌÐòÔ±±í°×µÄ´úÂë?

}.squarediv:nth-child(4){top:-100px;transform-origin:bottom;transform:rotateX(90deg);}.squarediv:nth-child(6){top:0;transform:translate...


¸Ö½îËãÁ¿µÄ·½·¨ - °Ù¶È¾­Ñé

ÆäÖпòÁº¸ß¶È>800mm ¼Ð½Ç=60° £¬¡Ü800mm ¼Ð½Ç=45°£¨¶þ£©¡¢Öмä¿ç¸Ö½îµÄ¼ÆËãÖмäÖ§×ù¸º½îÖмäÖ§×ù¸º½î£ºµÚÒ»ÅÅΪ£ºLn/3£«ÖмäÖ§×ùÖµ£«Ln/3£»µÚ¶þÅÅΪ£ºLn/4£«ÖмäÖ§...


¹úκÈËÁõ»Õ,×Ô׫¡¶º£µºËã¾­¡·,רÂÛ²â¸ßÍûÔ¶,ÆäÖÐÓÐÒ»...

½â:ÒòΪAH¡ÎBC,ËùÒÔ¡÷BCF¡×¡÷HAF,ËùÒÔ ,ÓÖÒòΪDE¡ÎAH,ËùÒÔ¡÷DEG¡×¡÷HAG,ËùÒÔ ,ÓÖÒòΪBC=DE,ËùÒÔ ,¼´ ,ËùÒÔBH=30750(²½),ÓÖÒòΪ ,ËùÒÔAH=30873¡Á5123=1255(²½)...


³£²ÄÁÏÓ²¶ÈµÄ²â¶¨·¨ÓÐÄÄÈýÖÖ?ËüÃÇÖ÷ÒªÊÊÓ¦ÓÚ¼ìÑéʲô²ÄÁÏ...

£¨1£©Ó²¶È£¨HB£©²â¶¨·¨£º²¼ÊÏÓ²¶È²â¶¨ÊÇÓÃÒ»¶¨Ö±¾¶D£¨mm£©µÄ¸ÖÇò»òÓ²ÖʺϽðÇòΪѹͷ£¬Ê©ÒÔÒ»¶¨µÄÊÔÑéÁ¦F(kgf»òN)£¬½«ÆäѹÈëÊÔÑù±íÃ棬¾­¹æ¶¨±£³Öʱ¼ät(s)ºóж³ýÊÔÑé...


ÓÐûÓÐÒ»¸öÓ¢Óïµ¥´Ê,Õý×ÅдÊÇÒ»¸öµ¥´Ê,µ¹×ÅдÓÖÊÇÒ»¸ö...

²»ÖªµÀ´ó¼ÒÓÐûÓÐÁôÒâµ½£¬uºÍn£¬pºÍb£¬ÊÇ»¥Îªµßµ¹µÄ¡£


Èçͼ,¡÷ABCÖÐ,AB=AC,¡ÏBAC=90¡ã,DÊÇÏ߶ÎBCÉÏÒ»µã,¡Ï...

¡ÏBDE=¡ÏEDG DE=DE ¡ÏDEB=¡ÏDEG=90¡ã ¡à¡÷DEB¡Õ¡÷DEG,¡àBE=EG= 1 2BG,¡ßAB=AC,¡ÏBAC=90¡ã,¡à¡ÏABC=¡ÏACB=¡ÏGDB,¡àHB=HD,¡ß¡ÏBED=¡ÏBHD=90¡ã,¡ÏBFE=¡ÏDFH,¡à¡Ï...


Çë½Ì,Q195µÄÂåÊÏÓ²¶È(HRB)Ò»°ãÊǶàÉÙ.Âé·³¸æËßÎÒ - °Ù¶ÈÖª ...

¢ÆÂåÊÏÓ²¶È£¨HR£©µ±HB450»òÕßÊÔÑù¹ýСʱ£¬²»ÄܲÉÓò¼ÊÏÓ²¶ÈÊÔÑé¶ø¸ÄÓÃÂåÊÏÓ²¶È¼ÆÁ¿¡£ËüÊÇÓÃÒ»¸öÖ§³Ö½Ç120°µÄ½ð¸ÕʯԲ׶Ìå»òÖ±¾¶Îª1.59¡¢3.18mmµÄ¸ÖÇò£¬ÔÚÒ»¶¨...


Ïà¹ØËÑË÷

ÈÈÃÅËÑË÷