1.
(2) According to the size of internal diameter and the PTR of deep vein in lower extremities, the PIDVL is classed by 3 grades.
(2)根据下肢深静脉内径值的大小及返流持续时间的长短将PIDVL程度分为3级。
2.
The duration of the end-plate current parallels the lifetime for channel closing.
终极电流的持续时间与通道关闭的持续时间相平行。
3.
Electric currents persisted only for a moment.
电的流动只持续短暂时间。
4.
duration:Continuance or persistence in time.
"持续,持久:时间上的连续或持续."
5.
Continuance or persistence in time.
持续，持久时间上的连续或持续
6.
signal duration
信号持续时间，脉冲持续时间
7.
playback duration
重放期间，重放(持续)时间
8.
minimum clock-pulse duratio
最小时钟脉冲持续时间
9.
Continuous Load A continuous load is a load where the maximum current is expected to continue for three hours or more (as defined by the NEC for design calculations).
持续负荷持续负荷是指使电流在3个小时或更长时间（根据NEC的定义）内需保持最大值的负荷。
10.
An Analysis of the Narrative Time in The Volcano Lover
流连忘返——《火山恋人》的叙事时间分析
11.
beam pulse duration
电子束脉冲持续时间
12.
pulse duration selector
脉冲持续时间选择器
13.
peak load effective duration factor
峰值功率持续时间率
14.
colour burst interval
彩色同步脉冲持续时间
15.
The storm was of short duration.
暴风雨持续时间很短。
16.
How long does the variable last?
变量应持续多长的时间？
17.
pulse duration discriminator
脉冲持续时间鉴别器
18.
duration of relay operation
继电器动作持续时间