Puas varifocals txhais tau tias yuav hnav txhua lub sijhawm?

Cov txheej txheem:

Puas varifocals txhais tau tias yuav hnav txhua lub sijhawm?
Puas varifocals txhais tau tias yuav hnav txhua lub sijhawm?
Anonim

Varifocal tsom iav muaj kev nyab xeeb nkaus rau hnav txhua lub sijhawm. Nws yog ib qho tseem ceeb heev uas koj hnav tsom iav varifocal nyob rau theem pib ntawm daim ntawv thov txij thaum sawv ntxov mus txog rau yav tsaus ntuj. Ua ntej koj pib hnav lawv txhua hnub, nws yooj yim dua rau siv lawv.

Kuv puas yuav tsum hnav kuv cov varifocals txhua lub sijhawm?

Thaum twg koj yuav ib khub tshiab, koj yuav tau siv rau lawv. … Cov txheej txheem no sib txawv ntawm cov tib neeg, tab sis feem ntau cov neeg tau siv rau cov iav varifocal tom qab ob lub lis piam. Qhov no yog vim li cas nws tseem ceeb heev uas yuav tsum tau hnav koj cov iav varifocal tas li kom koj lub qhov muag tuaj yeem hloov kho rau lawv.

Yuav ua li cas koj tau siv los hnav varifocals?

Kev siv rau varifocals tuaj yeem siv sijhawm los ntawm ob peb hnub mus rau ob peb lub lis piam. Koj yuav tsum muab sijhawm rau koj lub hlwb los kho qhov chaw saib tshiab, uas tuaj yeem siv sijhawm ntev dua yog tias koj sim varifocals thawj zaug. qhov muag maj mam kho.

Puas varifocals ua rau koj qhov muag tsis zoo?

Txawm tias koj xaiv los hnav koj lub tsom iav nyeem ntawv yuav ua rau tsis muaj qhov sib txawv rau koj qhov muag mus ntev (txawm tias koj yuav tsum ua kom koj ob lub qhov muag nyeem, koj yuav mob taub hau lossis pom tias koj ob lub qhov muag mob). Txawm li cas los xij, qhov xwm txheej tsis zoo ib yam rau menyuam yaus.

Kuv yuav ua li cas thiaj paub yog tias kuv cov varifocals yog lawm?

Yog koj xav tias koj lub zeem muag tau hloov pauv, nws tuaj yeem yog vim koj tus ncej tawm ntawmkev sib tw. Qhov no yog qhov tseeb tshwj xeeb ntawm varifocals - yog tias lawv zaum tsis raug, koj tuaj yeem saib ntawm qhov tsis ncaj ncees lawm ntawm lub lens, thiab koj lub zeem muag yuav zoo li qhov muag plooj. Lawv mob tom qab koj pob ntseg.

Pom zoo:

Nthuav cov khoom
Thaum twg tus menyuam ya mus?
Nyeem ntxiv

Thaum twg tus menyuam ya mus?

Fledglings feem ntau pib sim ya thaum cov noog muaj kwv yees li ob lub lis piam, thiab txawm tias lawv tau pib tawm hauv lub zes, lawv tsis nyob ntawm lawv tus kheej, raws li cov Massachusetts Audubon Society. Cov niam txiv feem ntau nyob ze, saib xyuas lawv cov xeeb ntxwv thiab tseem muab zaub mov.

Ntau npaum li cas 99 chinning osrs?
Nyeem ntxiv

Ntau npaum li cas 99 chinning osrs?

Feem ntau, rau 99 ntau yam, koj xav tias yuav siv sijhawm 40+ hnub kev cob qhia siv hlau lossis hlau riam phom. Tab sis kuj ceeb tias, txoj kev no raug nqi txog 30M-55Mnrog rune xub lossis mithril ntuav riam. Ntxiv rau, koj tuaj yeem ua tiav 60-99 ntau yam hauv tsawg li 15 hnub.

Dab tsi yog qhov txawv ntawm lub tshuab hluav taws xob thiab lub tshuab hluav taws xob?
Nyeem ntxiv

Dab tsi yog qhov txawv ntawm lub tshuab hluav taws xob thiab lub tshuab hluav taws xob?

Gramophone: Txhua lub suab kaw suab, lossis cov cuab yeej ua si yav dhau los-cov suab kaw, tshwj xeeb tshaj yog tias nws siv lub tiaj tiaj tiaj. Phonograph: Txhua lub suab kaw suab, lossis cov cuab yeej siv rau kev ua si cov suab uas tau kaw dhau los, tshwj xeeb tshaj yog tias nws siv lub tog raj kheej tig.