Trong th\u1ebf gi\u1edbi c\u1ee7a c\u00e1c l\u00f4 th\u1ee7 v\u00e0 nh\u1eefng con x\u1ed5 s\u1ed1, c\u00f3 r\u1ea5t nhi\u1ec1u c\u00e1ch gi\u00fap b\u1ea1n soi c\u1ea7u l\u00f4 ch\u00ednh x\u00e1c, hi\u1ec7u qu\u1ea3, b\u00e1ch ph\u00e1t b\u00e1ch tr\u00fang. Ngo\u00e0i nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p khoa h\u1ecdc v\u00e1 b\u00ed quy\u1ebft \u0111\u1ec9nh cao c\u1ee7a chuy\u00ean gia th\u00ec c\u00f3 m\u1ed9t c\u00e1ch soi c\u1ea7u b\u1eaft l\u00f4 m\u00e0 b\u1ea1n kh\u00f4ng th\u1ec3 b\u1ecf qua. <\/strong><\/p>\n B\u1eaft l\u00f4 theo ph\u01b0\u01a1ng ph\u00e1p d\u00e2n gian \u2013 soi c\u00e2u tr\u00fang \u0111\u1ea5y. C\u00f3 th\u1ec3 b\u1ea1n \u0111\u00e3 bi\u1ebft ho\u1eb7c \u0111\u00e3 t\u1eebng \u00e1p d\u1ee5ng n\u00f3 kh\u00f4ng d\u01b0\u1edbi 1 l\u1ea7n. H\u00e3y c\u00f9ng ad t\u00ecm hi\u1ec3u xem 3 c\u00e1ch b\u1eaft l\u00f4 d\u00e2n gian n\u00e0y l\u00e0 g\u00ec nh\u00e9.<\/p>\n C\u1ea7u l\u00f4 \u0111\u1ec1 qu\u1ea3 Tr\u00e1m<\/strong><\/p>\n a xem k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 xsmb 90 ngay c\u1ee7a ng\u00e0y h\u00f4m tr\u01b0\u1edbc, vi\u1ebft 27 gi\u1ea3i theo m\u1ed9t h\u00e0ng d\u1ecdc, xem trong 3 gi\u1ea3i li\u1ec1n k\u1ec1 nhau m\u00e0 c\u00f3 2 s\u1ed1 M-N nh\u01b0 th\u1ebf n\u00e0y:<\/p>\n N<\/p>\n M N M<\/p>\n N<\/p>\n \u0110\u00e2y l\u00e0 h\u00ecnh qu\u1ea3 tr\u00e1m, ta ch\u1ecdn con l\u00f4 MN ch\u01a1i trong 2 ng\u00e0y nh\u00e9, \u0111\u00e2y l\u00e0 b\u00ed k\u00edp soi c\u1ea7u l\u00f4 \u0111\u1ec1 chu\u1ea9n x\u00e1c c\u1ee7a c\u00e1c \u00f4ng cha \u0111\u1ec3 l\u1ea1i \u0111\u1ea5y \u1ea1.<\/p>\n