可用: available; usable密度: density; thickness指低于可用密度的潜像: sub-image使用密度: densities of use作用密度: action density土地利用密度: land use inte ity; land use intensity; landuseinte ity土地使用密度: density, land use有用密度范围: useful density range分程序块引用密度: block reference density可用功率通量密度: usable power flux density (pu)最小可用功率通量密度: minimum usable field-strength最小可用场强,最小可用功率通量密度: minimum usable field-strength可用: available; usable◇可用功 available work; available power; 可用功率 available horsepower; 可用落差 (水力发电) available head; 可用率 availability ratio; 可用性 usability; availability; applicability用密码: in cipher代用密码: substitution cipher公用密码术: public key cryptography公用密钥: common key; pk public key; public key公用密钥制: public key system门用密封条: door seal strip耐用密封的: sealed for life实用密技: psp私用密钥: private key通用密码机: general purpose cipher set用密码书写: cypher用密码写的: cryptographic