Kev paub

Kev ua tau zoo ntawm lub tshuab nqus tsev yas tshuab yas khoom siv polyethylene yog nyob rau hauv txoj kev polymerization

Hauv nuclear physics, astrophysics, thiab reactor ua haujlwm, polyethylene yog siv los ua diffuser los ntsuas neutrons. Ua nws tus kheej pab rau kev kawm ntawm nuclear physics. Polyethylene (PE) yog i

Polyethylene yog crystalline thermoplastic resin. Lawv cov qauv tshuaj, qhov hnyav molecular, qib ntawm polymerization, thiab lwm yam khoom yog nyob ntawm ntau txoj kev siv polymerization. Txoj kev po

Cov txheej txheem tseem ceeb ntawm txoj kev tsis tshua muaj siab nyob hauv cov catalyst. TiCl4-Al(C2H5)3 system tsim los ntawm Ziegler hauv lub teb chaws Yelemees yog thawj tiam catalyst rau polyolefi

Nws yog ib qho polymer tsim los ntawm polymerization ntawm ethylene monomer. Polyethylene tau tsim los ntawm British ICI hauv xyoo 1922, thiab kev tsim khoom lag luam pib xyoo 1939. Nws tau raug tsim

Nqus hlwv tshuab blister khoom polyethylene

Phau ntawv no qhia meej thiab qhia txog cov khoom siv hluav taws xob engineering, tsheb khiav cov ntaub ntawv, thiab cov khoom siv tsheb zoo nkauj. Phau ntawv muaj 11 tshooj, suav nrog cov khoom thiab

Txheej txheem cej luam ntawm Nws Pib Khoom ntawm Nqus Blister Tshuab

Cov ntaub ntawv tsim nyog rau tib neeg kev tsim khoom thiab lub neej. Txoj kev loj hlob ntawm tib neeg lub neej yog nrog kev txhim kho txuas ntxiv thiab siv ntau yam ntaub ntawv. Tam sim no, muaj ze l

Kev tsim kho hauv tsev ntawm lub tshuab nqus tsev blister daim ntawv thov hauv kev ntim tshuaj

Cov Txheej Txheem ntawm "Twelfth Five-Year" Development Plan for the Pharmaceutical Packaging Industry (Draft for Comments)" qhia tias kev ntim tshuaj yog ib qho tseem ceeb ntawm kev lag luam kws tshu

Kev ntim khoom noj thiab ntim khoom ntawm lub tshuab nqus tsev vacuum