-
發表於:2018-09-17
Integratedtechnologyforfullymechanizedtopcoalcavingminingfaceinsteepinclinedseamwithhardroof,softfloorandsoftcoalAccordingly,thedistributionofabutmentpressureontheblockco...
-
發表於:2023-12-27
1、Explorationevaluationcoalseamgasisabaseofcoalseamgasexplorationanddeveloping.2、CoalseamcorrelationandcharactersofcoalseamineasterndepressionofLiaohebasin3、coalseamwa...
-
發表於:2024-01-02
1、Analysisandcountermeasuresofoverproofoftheedgedeviationofweldinglineincircularseamweldingofboilerdrum2、Thefixingandsealingmaychooseamongparallel-seamwelding,brazeweld...
-
發表於:2017-06-16
Thehandsofalovingmotherline,wanderingontoclothing.Departurethickseam,Italymaydelayreturn.Whomadetheheart-inchgrass,reportedathreeChunhui.Theapplicationofahighproductionan...
-
發表於:2017-09-07
Coalsareremovedfromcircularseamofsilosothatmaterialsectionisincreasedandsilocoalblockageisreduced.Analysisandcountermeasuresofoverproofoftheedgedeviationofweldinglineinci...
-
發表於:2023-12-29
1、thicknessofcoalseam2、Thecoalandgasoutburstbecamemoreandmoredangerousalongwiththethicknessofcoalseamchangingandincreasing.3、thick-layerapttooxidationtypecharacterized...
-
發表於:2018-08-07
Inspectionweldingseamanddimensionofcargohatchcover.Also,improvetheoverlappedlengthofthetailframeandtheframeandchangetheweldingseamintointermittentseam,thereforetheframest...
-
發表於:2017-06-10
PlowabilityofplowminingonthinandsoftcoalseamwithhardroofPutshreddedPekingscallionandshreddedonionontobeefslices.Roll.Fixtheseamwithcornflour.Improvingthepenetrabilityofso...