十大不起眼的赚钱行业

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無縫鋼管承受水壓的計算公式
更新時間::2018-08-14 08:12:43

十大不起眼的赚钱行业 WUFENGGANGGUANCHENGSHOUSHUIYADEJISUANGONGSHI,JISUANGONGSHISHIWOMENHUOXUTOUDADESHIQING,NEIMEWUFENGGANGGUANDEXIANGGUANJISUANSHIHENYOUSHIJIYONGCHUDESHIQING,ZHONGSUOZHOUZHI,WUFENGGANGGUANDESHENGCHANYESHIBIJIAOYANMIDEGUOCHENG,NEIMECHENGSHOUSHUIYADEJISUANGONGSHIYESHIXUYAOJIANYANDE,NEIMEXIANZAIRANGWOMENKANYIXIAWUFENGGANGGUANCHENGSHOUSHUIYADEJISUANGONGSHI。

QUFUQIANGDU(σ 0.2 ) YOUDEJINSHUCAILIAODEQUFUDIANJIBUMINGXIAN,ZAICELIANGSHANGYOUKUNNAN,YINCIWEILEHENGLIANGCAILIAODEQUFUTEXING,GUIDINGCHANSHENGYONGJIUCANYUSUXINGBIANXINGDENGYUYIDINGZHI(YIBANWEIYUANCHANGDUDE 0.2% )SHIDEYINGLI,CHENGWEITIAOJIANQUFUQIANGDUHUOJIANCHENGQUFUQIANGDUσ 0.2 。KANGLAQIANGDU(σ b ) CAILIAOZAILASHENGUOCHENGZHONG,CONGKAISHIDAOFASHENGDUANLIESHISUODADAODEZUIDAYINGZHI。TABIAOSHIGANGCAIDIKANGDUANLIEDENENGLIDAXIAO。YUKANGLAQIANGDUXIANGYINGDEHUANYOUKANGYAQIANGDU、KANGWANQIANGDUDENG。SHE Pb WEICAILIAOBEILADUANQIANDADAODEZUIDALALI, Fo WEISHIYANGJIEMIANMIANJI,ZEKANGLAQIANGDUσ b= Pb/Fo ( MPa )。 YIZHIWUFENGGANGGUANWAIJINGGUIGEBIHOUQIUNENGCHENGSHOUYALIJISUANFANGFA (GANGGUANBUTONGCAIZHIKANGLAQIANGDUBUTONGYALI=(BIHOU×2×GANGGUANCAIZHIKANGLAQIANGDU)/(WAIJING×XISHU) YIZHIWUFENGGANGGUANWAIJINGHECHENGSHOUYALIQIUBIHOUJISUANFANGFA:BIHOU=(YALI×WAIJING×XISHU)/(2×WUFENGGANGGUANCAIZHIKANGLAQIANGDU) WUFENGGANGGUANYALIXISHUBIAOSHIFANGFA:YALIP<7Mpa XISHUS=8 7<WUFENGGANGGUANYALIP<17.5 XISHUS=6 YALIP>17.5 XISHUS=4。GANGGUANNEIJINGYOUDINGJINGJIZHANTOUDEWAIJINGCHANGDULAIQUEDING。GANGGUANJINGDINGJINGHOU,JINRULENGQUETAZHONG,TONGGUOPENSHUILENGQUE,GANGGUANJINGLENGQUEHOU,JIUYAOBEIJIAOZHI。GANGGUANJINGJIAOZHIHOUYOUCHUANSONGDAISONGZHIJINSHUTANSHANGJI(HUOSHUIYASHIYAN)JINXINGNEIBUTANSHANG。RUOGANGGUANNEIBUYOULIEWEN,QIPAODENGWENTI,JIANGBEITANCECHU。GANGGUANZHIJIANHOUHUANYAOTONGGUOYANGEDESHOUGONGTIAOXUAN。GANGGUANZHIJIANHOU,YONGYOUQIPENSHANGBIANHAO、GUIGE、SHENGCHANPIHAODENG。

十大不起眼的赚钱行业 WUFENGGANGGUANCHENGSHOUSHUIYAXIANGXINZHEJIANSHIYESHIWOMENBIJIAOHAOQIDEXIANGYAOYITANJIUJINGDESHIQING,NEIMEWOMENJIUYINGGAISHUXIZHANGWOZHEXIESHIQING,ZONGSHANGSHU,SHIGUANYUWUFENGGANGGUANCHENGSHOUSHUIYADEJISUANGONGSHI,WUFENGGANGGUANCHENGSHOUSHUIYADEJISUANGONGSHIHUANYOUHENDUO,ZAIGUOCHENGZHONGNANMIANHUICHUXIANWENTI,ZAIZHELIWOMENCHANGJIATIXINGNIN,GUOCHENGZHONGYIDINGYAOZHUYIQIFANGSHI,BIMIANCHUXIANWENTI。












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