1.
No reverse flow of oil exports in the oil flow available within inflow Type; Otherwise required outflow type, the control of oil in order to reduce pressure.
在油流反向出口无背压的油路中可用内泄式；否则需用外泄式，以降低控制油压力。
2.
Pilot Study of Detecting Intracardiac Pressure Invasively Using Ultrasonic Contrast Agent and Backscatter Technology;
声学造影剂及背向散射技术无创测量心腔内压力的初步研究
3.
high back-pressure and low oil pressure trip
高背压和低油压脱扣
4.
General ( blank ) endorsement
无记名（空白）背书
5.
He stumbled from weakness and pitched head foremost on his face, cutting his cheek, his pack upon his back.
由于浑身软弱无力绊了一跤，头重脚轻地栽下去，划破了脸，包袱压在背上。
6.
mechanical seal with low back pressure
背面低压式机械密封
7.
intermediate back-pressure foam distributing system
中背压泡沫分布系统
8.
My back is about to break under the load.
我的背给压得快要断了。
9.
double-extraction non-condensing turbine
双抽气背压式汽轮机
10.
non-condensing automatic extraction turbine
背压调节抽气式汽轮机
11.
geared noncondensing turbine
齿轮传动背压式汽轮机
12.
knapsack sprayer with pressurized cylinder
背负式压力筒喷雾器
13.
automatic back tool turning machine with hydraulic copying
自动液压仿形背刀车床
14.
accommodation endorsement
(无关系人亦签名于背面) 通融背书
15.
He spoke his lines utterly dead pan.
他毫无表情地背台词。
16.
They were surrounded back and belly and had no way out.
他们腹背受敌，无路可逃。
17.
Wear a yellow sunback Blouse with no sleeves
穿一件黄色无袖露背衫
18.
You can't cut with the back of the knife.
用刀背就无法切割.