1.txoj kev sawv cev

• Metric suav (Nm) yog hais txog qhov ntev hauv meters ntawm ib gram ntawm cov xov paj (lossis fiber ntau) ntawm qhov muab cov dej noo rov qab.

Nm = L (unit m)/G (unit g).

• Inch suav (Ne) Nws yog hais txog ntau npaum li cas 840 yards ntawm paj rwb xov uas hnyav 1 phaus (453.6 grams) (wool yarn yog 560 yards ib phaus) (1 yard = 0.9144 meters) ntev.

Ne=L(unit y)/{G(unit p)X840)}.

Qhov ntsuas ntiv tes yog qhov ntsuas ntsuas tau teev tseg los ntawm cov txheej txheem qub hauv tebchaws rau cov tuab ntawm cov paj rwb, uas tau hloov los ntawm tus lej tshwj xeeb. Yog tias 1 phaus ntawm cov xov paj muaj 60 840 yards ntev, cov xov paj fineness yog 60 nti, uas tuaj yeem sau tau li 60S. Cov kev sawv cev thiab kev suav cov txheej txheem ntawm cov ntiv tes suav ntawm cov strands yog tib yam li cov metric suav.

2.ruaj-ntev system

Hais txog qhov hnyav ntawm qhov ntev ntawm fiber ntau lossis xov paj.

Tus nqi me dua, cov xov paj zoo dua. Nws cov ntsuas ntsuas suav nrog tus lej tshwj xeeb (Ntex) thiab denier (Nden).

• Ntex, los yog tex, hais txog qhov hnyav hauv grams ntawm 1000m ntev fiber ntau lossis xov paj ntawm qhov kev txiav txim siab noo noo rov qab los, tseem hu ua tus lej.

Ntex = 1000G (unit g) / L (unit m)

Rau ib lub xov paj, tus lej tex tuaj yeem sau ua "18 tex", uas txhais tau hais tias thaum cov xov paj ntev 1000 meters, nws qhov hnyav yog 18 grams. Tus naj npawb ntawm cov strands yog sib npaug rau cov xov tooj ntawm ib qho yarns multiplied los ntawm cov xov tooj ntawm strands. Piv txwv li, 18X2 txhais tau hais tias ob lub xov paj ib leeg ntawm 18 tex yog pled, thiab cov ply fineness yog 36 tex. Thaum tus naj npawb ntawm cov xov paj uas tsim cov strands sib txawv, tus naj npawb ntawm cov strands yog cov lej ntawm cov xov tooj ntawm txhua tus xov tooj.

Rau fibers, tus naj npawb ntawm tex yog loj heev, thiab nws yog feem ntau qhia nyob rau hauv decitex (Ndtex). Lub decitex (unit dtex) hais txog qhov hnyav hauv grams ntawm 10000m ntev fiber ntau ntawm qhov muab dej noo rov qab.

Ndtex = (10000G × Gk) / L = 10 × Ntex

• Denier (Nden) yog denier, uas yog hais txog qhov hnyav hauv grams ntawm 9000m ntev fibers los yog yarns ntawm predetermined noo noo regain.

Nden = 9000G (unit g) / L (unit m)

Denier tuaj yeem qhia tau tias: 24 denier, 30 denier thiab lwm yam. Lub denier ntawm cov strands yog qhia nyob rau hauv tib txoj kev raws li tus naj npawb tshwj xeeb. Denier feem ntau yog siv los qhia qhov zoo ntawm ntuj fiber ntau los yog tshuaj fiber ntau filament.

3. sawv cev txoj kev

Cov ntaub suav yog ib txoj hauv kev nthuav qhia cov xov paj, feem ntau yog qhia raws li cov ntiv tes suav (S) hauv "kev cai qhov hnyav" (qhov kev suav no tau muab faib ua metric suav thiab ntiv tes suav), uas yog: nyob rau hauv cov nom tswv hauv qab cov dej noo. regain (8.5%), tus naj npawb ntawm skeins nrog ntev ntawm 840 yards ib skein nyob rau hauv spun yarn hnyav ib phaus yog tus naj npawb ntawm suav.

Feem ntau, thaum ua lag luam ntaub, ntau cov lus tshaj lij feem ntau koom nrog: suav, ceev. Yog li dab tsi cuam tshuam cov ntaub suav thiab qhov ntom ntom ntawm cov ntaub?

Tej zaum ib txhia neeg tseem yuav nyob rau hauv lub puzzle.Cov lus tom ntej yuav mus rau hauv kom meej.