"demonstrating"的搜索结果

bubonic plague smear demonstrating the presence of yersinia pestis bacteria

标签: bubonic,plague,smear,demonstra 浏览: 12

demonstrating ddt hand spraying equipment while applying the insecticide

标签: demonstrating,ddt,hand,sprayin 浏览: 12

malaria control worker is demonstrating malathion spraying technique

标签: malaria,control,worker,is,demo 浏览: 11

worker demonstrating how to properly wear personal protective equipment

标签: worker,demonstrating,how,to,pr 浏览: 16

doctoral fellow demonstrating how to properly wear personal protective equipment in appropriate laboratory

标签: doctoral,fellow,demonstrating, 浏览: 12

field technician is demonstrating the protective clothing ie gown gloves and mask

标签: field,technician,is,demonstrat 浏览: 20

young woman makes a living though ecotourism in her remote village demonstrating

标签: young,woman,makes,a,living,tho 浏览: 17

man demonstrating the use of a handcrank water pump senegal

标签: man,demonstrating,the,use,of,a 浏览: 15

woman demonstrating a hand crank water pump

标签: woman,demonstrating,a,hand,cra 浏览: 14

demonstrating the use of a handcrank water pump

标签: demonstrating,the,use,of,a,han 浏览: 13