Video: Coltan feem ntau yog mined li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Coltan yog khawb av los ntawm txoj kev ncaj ncees thaum pib zoo ib yam li kub li cas khawb av hauv California thaum xyoo 1800s. Kaum ob ntawm cov txiv neej ua hauj lwm ua ke khawb loj craters nyob rau hauv streambeds, scraping deb av los ntawm qhov chaw thiaj li yuav tau mus rau lub coltan hauv av. Coltan mining tau them zoo heev hauv Congo cov nqe lus.
Hauv qhov no, qhov twg yog coltan mined?
Congo
Tsis tas li ntawd, Coltan puas yog lub ntiaj teb tsawg tsawg? Qhov tseem ceeb tsis tshua muaj hlau (RMs) thiab metalloids tau tham hauv ntu no yog niobium, tantalum, cobalt, indium, zirconium, gallium, thiab lithium. Tantalum thiab Niobium yog cov tshuaj sib txuas tshaj plaws ntawm RMs. Lawv feem ntau pom ua ke hauv cov ore columbite-tantalite (" cov coltan ").
Ib yam li ntawd ib tug yuav nug, yog vim li cas coltan thiaj li muaj nuj nqis?
Siv thiab thov Coltan yog siv feem ntau rau kev tsim cov tantalum capacitors, siv nyob rau hauv ntau yam khoom siv hluav taws xob. Ntau qhov chaw hais txog cov coltan tseem ceeb hauv kev tsim cov xov tooj ntawm tes, tab sis tantalum capacitors yog siv nyob rau hauv yuav luag txhua yam khoom siv hluav taws xob.
Tus nqi tam sim no ntawm coltan yog dab tsi?
1kg nqi ib ncig $100, tab sis tus nqi muaj keeb kwm tau siab txog $600 ib kg. Ib Congolese Coltan miner tuaj yeem khwv tau txog $ 200 toj ib hlis.
Pom zoo:
Puas yog piracy yog feem ntau hom kev nyiag software?
Kuj hu ua piracy? Feem ntau hom ntawm software tub sab? Software piracy yog qhov tsis tau tso cai thiab tsis raug cai luam tawm ntawm cov software muaj cai
Vim li cas thiaj li npaj daim npav poker feem ntau tuaj nrog cov lej los ntawm Fibonacci ib ntu ntawm lawv?
Yog vim li cas rau kev siv Fibonacci ib ntus es tsis txhob tsuas yog ua ob npaug rau txhua qhov txiaj ntsig tom qab yog vim tias kwv yees ib txoj haujlwm raws nraim ob npaug ntawm kev siv zog raws li lwm txoj haujlwm yog kev dag ntxias
Vim li cas cov teb feem ntau yog tus kheej?
Cov teb yuav tsum tau tshaj tawm ntiag tug tshwj tsis yog tias muaj laj thawj zoo rau tsis ua li ntawd. Ib qho ntawm cov ntsiab cai ntawm kev ua kom muaj nuj nqis nyob rau hauv qhov programming yog 'Minimize ripple los ntawm kev ceev cov secrets.' Thaum ib daim teb yog tus kheej, tus neeg hu xov tooj feem ntau tsis tuaj yeem tau txais kev nkag ncaj qha mus rau qhov chaw
Lub microkernel feem ntau piav qhia li cas?
Lub microkernel yog ib qho ntawm cov software lossis cov lej uas muaj qhov ze-tsawg kawg ntawm cov haujlwm thiab cov yam ntxwv uas yuav tsum tau ua los siv rau kev ua haujlwm
Puas yog qhov kis nruab nrab yog ib feem ntawm lub cev txheej vim li cas los yog vim li cas ho tsis?
Lub cev txheej hauv OSI Model yog txheej qis tshaj plaws thiab siv rau kev xa cov ntaub ntawv hauv nws daim ntawv yooj yim: ntsis-qib. Qhov nruab nrab kis tau tus mob tuaj yeem yog wired lossis wireless. Cov txheej txheem ntawm lub cev nyob rau hauv ib tug qauv wired muaj xws li cables thiab connectors uas yog siv los nqa cov ntaub ntawv los ntawm ib qho chaw mus rau lwm qhov