保管: take care of; put sth. under ...面积: area流管面积: stream tube area喷管面积比: exit area ratio; nozzle area ratio冷却盘管面积: refrigerating coil area风洞喷管面积比: area ratio of tunnel nozzle弱电击的导管面积: catheter area for microshock最佳喷管面积比: optimum nozzle-area ratio保管: 1.(保藏; 管理) take care of; put sth. under one's custody; safeguard; safekeep 把工具保管好 take good care of the tools; 图书保管工作 the care of library books2.[口语] (担保) certainly; surely 他保管不知道。 he certainly doesn't know.; 保管仓库 custodial warehouse; 保管费 storage charges; storage fee; 保管期 maintaining period; 保管人 custodian; trustee; 保管室 storeroom; 保管条件 maintaining requirement; 保管业务 custodian service; 保管员 storeman; stockman; storekeeper尖管面: penne盘管面: coil surface水管面: macaroni; penne长管面具: long tube respirators管面涂层: pipe coating; pipe-coating接管面标高: level of nozzle face软管面罩: hose mask文氏管面罩: venturi mask面积: [数学] area 建筑面积 built-up area; 居住面积 dwelling area; floor space; 大面积丰收 bumper harvest over an extensive area; 茶叶种植面积 the acreage under tea trees 保管处: depositary; depository保管的: custodial保管费: carrying charge; carrying cost; custodian fee; custodianfee; frais de gardiennage; keeping expe e; keeping expenses; maintenance fees; possession money; safe custody charges; safe custody fee; safe-keeping charge; safe-keepingfee; safeguard fee; shelter costs; storage charge; storage cost; storage fee保管柜: storage cabinets保管库: safe custody vault; safe deposit vault; safe-deposit vault保管款: fund held in custody; funds held in custody保管林: state forest in the custody