txheem
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 xyoo | 21-25 xyoo | 26-30 xyoo | 31-35 xyoo | 36-40 xyoo | 41-45 xyoo | 46-50 xyoo | 51-55 xyoo | 56 xyoo thiab laus dua |
2-3% | 2.0 hli | 2.5 hli | 3.5 hli | 4.5 hli | 5.6 hli | 6.7 hli | 7.7 hli | 8.8 hli | 9.9 hli |
4-5% | 3.9 hli | 4.9 hli | 6.0 hli | 7.1 hli | 8.1 hli | 9.2 hli | 10.2 hli | 11.3 hli | 12.4 hli |
6-7% | 6.2 hli | 7.3 hli | 8.4 hli | 9.4 hli | 10.5 hli | 11.5 hli | 12.6 hli | 13.7 hli | 14.7 hli |
8-9% | 8.5 hli | 9.5 hli | 10.6 hli | 11.7 hli | 12.7 hli | 13.8 hli | 14.8 hli | 15.9 hli | 17.0 hli |
10-11% | 10.5 hli | 11.6 hli | 12.7 hli | 13.7 hli | 14.8 hli | 15.9 hli | 16.9 hli | 18.0 hli | 19.1 hli |
12-13% | 12.5 hli | 13.4 hli | 14.6 hli | 15.7 hli | 16.8 hli | 17.8 hli | 18.9 hli | 20.0 hli | 21.0 hli |
14-15% | 14.3 hli | 15.4 hli | 16.4 hli | 17.5 hli | 18.6 hli | 19.6 hli | 20.7 hli | 21.8 hli | 22.8 hli |
16-17% | 16.0 hli | 17.0 hli | 18.1 hli | 19.2 hli | 20.2 hli | 21.3 hli | 22.4 hli | 23.4 hli | 24.5 hli |
18-19% | 17.5 hli | 18.6 hli | 19.6 hli | 20.7 hli | 21.8 hli | 22.8 hli | 23.9 hli | 25.0 hli | 26.0 hli |
20-21% | 18.9 hli | 20.0 hli | 21.0 hli | 22.1 hli | 23.2 hli | 24.7 hli | 25.3 hli | 26.4 hli | 27.4 hli |
22-23% | 20.2 hli | 21.2 hli | 22.3 hli | 23.4 hli | 24.4 hli | 25.5 hli | 26.6 hli | 27.6 hli | 28.7 hli |
24-25% | 21.3 hli | 22.3 hli | 23.4 hli | 24.5 hli | 25.6 hli | 26.6 hli | 27.7 hli | 28.7 hli | 29.8 hli |
26-27% | 22.3 hli | 23.3 hli | 24.4 hli | 25.5 hli | 26.5 hli | 27.6 hli | 28.7 hli | 29.7 hli | 30.8 hli |
Cov lus los laij cov rog feem pua los ntawm cov tuab ntawm cov quav hauv poj niam:
Rog feem pua: | 18-20 xyoo | 21-25 xyoo | 26-30 xyoo | 31-35 xyoo | 36-40 xyoo | 41-45 xyoo | 46-50 xyoo | 51-55 xyoo | 56 xyoo thiab laus dua |
2-3% | 11.3 hli | 11.9 hli | 12.5 hli | 13.2 hli | 13.8 hli | 14.4 hli | 15.0 hli | 15.6 hli | 16.3 hli |
4-5% | 13.5 hli | 14.2 hli | 14.8 hli | 15.4 hli | 16.0 hli | 16.7 hli | 17.3 hli | 17.9 hli | 18.5 hli |
6-7% | 15.7 hli | 16.3 hli | 16.9 hli | 17.6 hli | 18.2 hli | 18.8 hli | 19.4 hli | 20.0 hli | 20.7 hli |
8-9% | 17.7 hli | 18.4 hli | 19.0 hli | 19.6 hli | 20.2 hli | 20.8 hli | 21.5 hli | 22.1 hli | 22.7 hli |
10-11% | 19.7 hli | 20.3 hli | 20.9 hli | 21.5 hli | 22.2 hli | 22.8 hli | 23.4 hli | 24.0 hli | 24.6 hli |
12-13% | 21.5 hli | 22.1 hli | 22.7 hli | 23.4 hli | 24.0 hli | 24.6 hli | 25.2 hli | 25.9 hli | 26.5 hli |
14-15% | 23.2 hli | 23.8 hli | 24.5 hli | 25.1 hli | 25.7 hli | 26.3 hli | 26.9 hli | 27.6 hli | 28.2 hli |
16-17% | 24.8 hli | 25.5 hli | 26.1 hli | 26.7 hli | 27.3 hli | 27.9 hli | 28.6 hli | 29.2 hli | 29.8 hli |
18-19% | 26.3 hli | 27.0 hli | 27.6 hli | 28.2 hli | 28.8 hli | 29.4 hli | 30.1 hli | 30.7 hli | 31.3 hli |
20-21% | 27.7 hli | 28.4 hli | 29.0 hli | 29.6 hli | 30.2 hli | 30.8 hli | 31.5 hli | 32.1 hli | 32.7 hli |
22-23% | 29.0 hli | 29.6 hli | 30.3 hli | 30.9 hli | 31.5 hli | 32.1 hli | 32.8 hli | 33.4 hli | 34.0 hli |
24-25% | 30.2 hli | 30.8 hli | 31.5 hli | 32.1 hli | 32.7 hli | 33.3 hli | 34.0 hli | 34.6 hli | 35.2 hli |
26-27% | 31.3 hli | 31.9 hli | 32.5 hli | 33.2 hli | 33.8 hli | 34.4 hli | 35.0 hli | 35.6 hli | 36.3 hli |