带分数化简总搞反？用“逆拆解法”两步不出错，又快又准！Mixed Numbers Confusing?The “Reverse Split” Method Solves Them in 2 Steps

PEEPER on Instagram: "Carbon dioxide rock blasting is a non-explosive method used to split stone using rapidly expanding CO2 gas. A sealed tube filled with liquid carbon dioxide is placed into a drilled hole in the rock. When triggered, the CO₂ rapidly expands, generating high pressure that fractures the stone along natural weaknesses without a traditional explosion. This technique produces less vibration, noise, and flying debris than conventional blasting, making it useful near buildings, tunn