Yuav ua li cas thiaj paub qhov feem pua ​​ntawm cov rog los ntawm cov tuab ntawm quav (cov lus)

Txhawm rau txiav txim siab qhov feem pua ​​ntawm cov rog hauv lub cev, muaj ib txoj hauv kev yooj yim ntawm kev ntsuas qhov tuab ntawm cov rog ntawm lub plab (ntawm 10 cm mus rau sab xis ntawm txoj hlab ntaws, ntawm tib qhov siab). Feem ntau ntsuas cov folds siv tshwj xeeb ntaus ntawv - lub caliper, thiab cov txheej txheem raug hu ua calipatriaCov. Lub caliper yog qhov tseeb cov quab yuam ua kom nruj nrog lub pas ntsuas. Txhawm rau hloov cov cuab yeej no nws muaj peev xwm ua tau rau hauv cov tshuab calipers, los sis txawm siv w muab tawm

Yog li, nrhiav qhov taw tes nyob rau sab xis ntawm txoj hlab ntaws, ntsuas qhov tuab ntawm cov quav hauv qhov chaw no (hauv millimetres). Tom qab ntawd siv lub rooj hauv qab no los laij seb feem pua ​​ntawm cov rog hauv peb lub cev.

Cov lus los laij cov rog feem pua ​​los ntawm cov tuab ntawm cov txiv neej:

Rog feem pua:18-20 xyoo21-25 xyoo26-30 xyoo31-35 xyoo36-40 xyoo41-45 xyoo46-50 xyoo51-55 xyoo56 xyoo

thiab laus dua

2-3%2.0 hli2.5 hli3.5 hli4.5 hli5.6 hli6.7 hli7.7 hli8.8 hli9.9 hli
4-5%3.9 hli4.9 hli6.0 hli7.1 hli8.1 hli9.2 hli10.2 hli11.3 hli12.4 hli
6-7%6.2 hli7.3 hli8.4 hli9.4 hli10.5 hli11.5 hli12.6 hli13.7 hli14.7 hli
8-9%8.5 hli9.5 hli10.6 hli11.7 hli12.7 hli13.8 hli14.8 hli15.9 hli17.0 hli
10-11%10.5 hli11.6 hli12.7 hli13.7 hli14.8 hli15.9 hli16.9 hli18.0 hli19.1 hli
12-13%12.5 hli13.4 hli14.6 hli15.7 hli16.8 hli17.8 hli18.9 hli20.0 hli21.0 hli
14-15%14.3 hli15.4 hli16.4 hli17.5 hli18.6 hli19.6 hli20.7 hli21.8 hli22.8 hli
16-17%16.0 hli17.0 hli18.1 hli19.2 hli20.2 hli21.3 hli22.4 hli23.4 hli24.5 hli
18-19%17.5 hli18.6 hli19.6 hli20.7 hli21.8 hli22.8 hli23.9 hli25.0 hli26.0 hli
20-21%18.9 hli20.0 hli21.0 hli22.1 hli23.2 hli24.7 hli25.3 hli26.4 hli27.4 hli
22-23%20.2 hli21.2 hli22.3 hli23.4 hli24.4 hli25.5 hli26.6 hli27.6 hli28.7 hli
24-25%21.3 hli22.3 hli23.4 hli24.5 hli25.6 hli26.6 hli27.7 hli28.7 hli29.8 hli
26-27%22.3 hli23.3 hli24.4 hli25.5 hli26.5 hli27.6 hli28.7 hli29.7 hli30.8 hli

Cov lus los laij cov rog feem pua ​​los ntawm cov tuab ntawm cov quav hauv poj niam:

Rog feem pua:18-20 xyoo21-25 xyoo26-30 xyoo31-35 xyoo36-40 xyoo41-45 xyoo46-50 xyoo51-55 xyoo56 xyoo

thiab laus dua

2-3%11.3 hli11.9 hli12.5 hli13.2 hli13.8 hli14.4 hli15.0 hli15.6 hli16.3 hli
4-5%13.5 hli14.2 hli14.8 hli15.4 hli16.0 hli16.7 hli17.3 hli17.9 hli18.5 hli
6-7%15.7 hli16.3 hli16.9 hli17.6 hli18.2 hli18.8 hli19.4 hli20.0 hli20.7 hli
8-9%17.7 hli18.4 hli19.0 hli19.6 hli20.2 hli20.8 hli21.5 hli22.1 hli22.7 hli
10-11%19.7 hli20.3 hli20.9 hli21.5 hli22.2 hli22.8 hli23.4 hli24.0 hli24.6 hli
12-13%21.5 hli22.1 hli22.7 hli23.4 hli24.0 hli24.6 hli25.2 hli25.9 hli26.5 hli
14-15%23.2 hli23.8 hli24.5 hli25.1 hli25.7 hli26.3 hli26.9 hli27.6 hli28.2 hli
16-17%24.8 hli25.5 hli26.1 hli26.7 hli27.3 hli27.9 hli28.6 hli29.2 hli29.8 hli
18-19%26.3 hli27.0 hli27.6 hli28.2 hli28.8 hli29.4 hli30.1 hli30.7 hli31.3 hli
20-21%27.7 hli28.4 hli29.0 hli29.6 hli30.2 hli30.8 hli31.5 hli32.1 hli32.7 hli
22-23%29.0 hli29.6 hli30.3 hli30.9 hli31.5 hli32.1 hli32.8 hli33.4 hli34.0 hli
24-25%30.2 hli30.8 hli31.5 hli32.1 hli32.7 hli33.3 hli34.0 hli34.6 hli35.2 hli
26-27%31.3 hli31.9 hli32.5 hli33.2 hli33.8 hli34.4 hli35.0 hli35.6 hli36.3 hli

Sau ntawv cia Ncua