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發表於:2021-11-13
ThisphenomenonwasobservedbyCraigPacker,awildlifebiologistattheUniversityofMinnesota.Thebiggeranddarkerthemane,themorematesalionattracts,andthebetterhiscubssurvive,PeytonW...
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發表於:2023-12-29
1、singlestringretrievablepacker2、cuptyperetrievablepacker3、Inthedesignofthehydraulicdual-anchorretrievablepacker,thefollowingshouldbetakenintoconsideration:(1)selectio...
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發表於:2017-07-19
cuptyperetrievablepackerretrieval-DBpackerfilmvacuumcombinationpackerpackersettingcontrollinesinglestringretrievablepackerunitwatermedicinalbottlepackerdownward-lookingcu...
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發表於:2017-11-28
inflatablepackerteststringProductionortestpackersmaybesetincasedholesandinflatablepackersareusedinopenorcasedholes.Theminimumrestrictionshouldbeconsideredinbothrunningand...