a device or control that is very useful for a particular job n
n a device or control that is very useful for a particular job n durable goods for home or office use
request and expect v address a question to and expect an answer from v require as useful, just, or proper v require or ask for as a price or condition
a useful or valuable quality
anything of material value or usefulness that is owned by a person or company
actual useful years
[经] 实际使用年限
be full as useful as
同...完全一样有用
be useful at
熟悉,精通,擅长…
come in useful
可能有用,早晚会派上用场
computer useful time
[计] 计算机有效时间
decline in economic usefulness
[经] 经济效用降低
estimated useful life
[经] 估计使用年限
houseful
n. 满屋
housefuls
n. 满屋, 一屋子( houseful的复数形式 )
lost usefulness
[经] 用途消失
lowes useful high frequency
[电] 最低使用高频率
make oneself useful
帮忙,做有用的人
maximum useful output
[电] 最大可用输出看
museful
a. 沉思的
net useful work
[化] 净最大功; 净有效功
unuseful
a. 无用的,无益的
unusefulness
不实用或无价值的性质或状态
useful area
[化] 有效面积
useful cross section
[化] 有效截面
useful density range
[医] 有用密度范围
