The soil bulk density and moisture content are main factors influencing the draftresistance and power consumption of tractors.
土壤容重和含水量是影响机具耕作阻力和能量消耗的主要因素。
2
OBJECTIVE to study the distribution and drug resistance of nosocomial infection pathogens from lower respiratory tract in senile patients and give draft preventive and control measures.
目的探讨老年患者下呼吸道感染常见病原菌的分布及耐药状况，制定针对性预防与控制措施。
3
A draft global action plan on antimicrobial resistance is on your agenda.