1.Txoj kev tu qoob loo suav nrog kev tu lub tshuab tag nrho thiab kev siv me me ntawm kev tswj hwm. Lub sundries ntawm kev sib tshuam ntawm cov qos yaj ywm harvester yuav tsum tau ntxuav, du los yog roj kaw; Qos yaj ywm harvester los yog nquag mus xeb qhov twg cov xim ntog tawm ua rau raug, yuav tsum tau kom raws sij hawm xim xim tiv thaiv xeb.
2.Nws kuj tseem muaj qee yam khoom siv roj hmab thiab yas ntawm cov qos yaj ywm harvester. Cov qos yaj ywm harvester yog qhov yooj yim rau kev laus thiab degeneration tom qab raug tshav ntuj, thiab nws elasticity tsis zoo, cuam tshuam rau kev siv rau xyoo tom ntej. Qos yaj ywm harvester nyob rau hauv kev saib xyuas ntawm cov khoom no, nws tau tawm tswv yim kom siv cov roj paraffin rau ntawm nws qhov chaw, thiab tom qab ntawd cov qos yaj ywm harvester tau muab tso rau hauv qhov chaw qhuav qhuav kom deb ntawm tshav ntuj ncaj qha.
