Feidhm tosaigh agus chúl anmascdifriúil. Go leormascs use a three-layer design type, in which the filter layer for filtering bacteria is located in the middle, the outer layer is a waterproof layer, and the inside is a water-absorbing layer. If it is worn backwards, the water-absorbing layer will become a waterproof layer, and the waterproof layer will become a water-absorbing layer, which will cause the saliva to adhere to the surface of the masc, and the more it accumulates, the more the mascféadfaidh sé dul fliuch agus anmasccaillfidh sé a fheidhm scagtha.
Conas a dhéanann tú idirdhealú a dhéanamh idir tosaigh agus chúl anmasc?
Ag breithiúnas ar an gcuma
Go ginearálta, feicimid liachta gorm
surgical masc, is é an taobh gorm an taobh amuigh, agus is é an taobh daite éadrom (bán) an taobh istigh (ceangailte leis an duine). Dath eile
mascs can also be judged according to this principle. If the masc or brand name is printed on the masc, the side with the logo or embossing is the outside.
Ag breithiúnas de réir treo an fhillte
Má tá do
masctá trí fhillte ann, is é an taobh leis na fillteacha taobh amuigh. Má tá do
mascTá ceithre fhilleadh ann, tar éis a bheith sínte amach, is é an taobh protruding den lárfhilleadh an taobh amuigh.
Judging de réir an ábhair fabraice
An taobh istigh den
mascis ciseal a ionsú uisce, tá an fhabraic níos boige, tá an taobh seachtrach dromchla uiscedhíonach, agus tá an fhabraic níos righne ná an taobh istigh. Le titim uisce, tá an taobh hidrofilic (uisce ag insíothlú an dromchla) ag tabhairt aghaidh isteach, agus an taobh hidreafóbach (níl uisce ag insíothlú agus sféarúil) ag tabhairt aghaidh amach.
