requiredadj.必需的
requirev.要求;需要;命令;规定
require variable declaration[计] 要求做变量声明
required machining allowance要求的机械加工余量
required proof of entitlement应享权利的必要证明
Requires analytic Jacobian.听 听 %23 Stiff problem.
required deformation capacity需求变形能力
required cryptographic session请求密码对话
required minimum depth of water规定的最浅水深