Xov xwm

Siv nyob rau hauv nyiaj txiag, nyiaj txiag thiab se, philately, hluav taws xob kev lag luam los soj ntsuam banknotes, nyiaj muas, nyiaj muas, npib, phaib ntawv thiab luam ntawv outlets. Yuav kom ra...

Qhov kev xaiv ntawm qhov ntau, qhov ntau dua qhov pom, qhov zoo dua! Kev pom pheej yig yuav tsum yooj yim dua thiab siv tau ntau dua, yog tias 1-200 yuan ntawm qhov pom muaj qhov ua haujlwm, qhov t...

Kuj tseem hu ua binoculars. Nws yog ib qho kev soj ntsuam ntsuas uas tsim los ntawm ob lub telescopes nrog tib qhov kev ua tau zoo uas ua tau raws li qhov xav tau ntawm tib neeg lub qhov muag. Nws ...

Astronomical telescopes muab faib ua 3 pawg: refractive, Newtonian reflective, thiab refractive. Hom Refractive: ua ke nrog ntau lub lo ntsiab muag, lub raj pem hauv ntej nkag mus rau lub teeb, thi...

Optical microscope muaj eyepieces, lub hom phiaj lo ntsiab muag, coarse focus spirals, fine focus spirals, tablet clamps, through-apertures, shutters, converters, reflectors; Theem, daim iav caj np...

Lub microscope yog ib qho ntawm tib neeg txoj kev tsim khoom loj tshaj plaws. Ua ntej nws tsim, tib neeg lub tswv yim hais txog lub ntiaj teb nyob ib puag ncig lawv tsuas yog siv qhov muag liab qab...

Lub tshuab tsom iav yog ib qho khoom siv kho qhov muag uas tsim los ntawm lub lens lossis kev sib txuas ntawm ob peb lo ntsiab muag, uas yog ib qho cim qhia tias tib neeg tau nkag mus rau lub hnub ...

Magnifying iav raws li qhov pom kev faib tawm tuaj yeem muab faib ua portable magnifying iav thiab desktop magnifying iav, desktop magnifying iav tuaj yeem kho tau, muaj lub hauv paus hauv qab no, ...

Tus lej ua ntej lub iav tsom iav qhia qhov kev nthuav dav, piv txwv li, 8X30 qhia tias qhov loj ntawm lub iav yog 8x. Yog tias nws yog hom ob-tus nqi, cais ob tus lej nrog / cim. Piv txwv li, 2x / ...

Telescopes originated nyob rau hauv tsom iav. Tib neeg pib siv tsom iav txog 700 xyoo dhau los. Nyob ib ncig ntawm 1300 AD, cov neeg Italians pib ua cov tsom iav nyeem los ntawm cov lo ntsiab muag ...

Astronomical telescopes yog cov cuab yeej tseem ceeb rau kev soj ntsuam lub cev hnub qub thiab khaws cov ntaub ntawv xov xwm hnub qub. Txij li thaum Galileo Galilei ua thawj lub koob yees duab hauv...

Field binoculars thiab prism binoculars yog me dua thiab tuaj yeem siv hauv tes nrog cov tsom iav tsom iav. Lawv tuaj yeem ua kom zoom rau ntawm cov hom phiaj nyob deb, yog li dhau ntawm lawv, cov ...