u6d4bu89d2u7cbeu5ea6 u00b10.5u201duff0cu6d4bu8dddu7cbeu5ea6 u00b1(1mm+1ppm)
u5730u5f62u6d4bu91cfu3001u65bdu5de5u653eu6837u7b49
u80fdu81eau52a8u5bfbu627eu548cu81eau52a8u7cbeu786eu7167u51c6u76eeu6807u3001u81eau52a8u6d4bu5b9au6d4bu7ad9u70b9u81f3u76eeu6807u70b9u7684u8dddu79bbu3001u6c34u5e73u65b9u5411u503cu548cu5929u9876u8ddduff0cu5e76u80fdu540cu6b65u8ba1u7b97u51fau76eeu6807u70b9u76f8u5bf9u6d4bu7ad9u70b9u4e09u7ef4u5750u6807uff0cu6700u540eu8bb0u5f55u5728PCu5361u6216u8ba1u7b97u673au5185u3002
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