Quality of the backwash water and treated water was studied.

PCF varying pore fiber filter is a water treatment device, which has such characteristics as high filtration accuracy, backwash thoroughly, filtration rate as high as 100 m3/ ( m2 · h), low self water consumption.

PCF孔隙调节型纤维过滤器是一种过滤精度高、反洗彻底、滤速可达100m3/（m2.h）、自用水率低的水处理设备。

Cannot count lines backwards! ( Internal error) { 0}, { 1}

无法向后计算行数！（内部错误）{0}、{1}

The N content per unit leaf area was the highest in the second leaf count backwards, and that of decrepit leaf was about the 1/ 3 of the normal leaf.

单位叶面积含N率以倒数第2展开叶最高，衰老叶片只有正常叶片的1/3左右。

If you knew in advance, you could have, actually, your car's mileage counter to count backwards from the point where the car will die and start walking.

如果你事先知道，你可以倒着走，用里程表计算从起点到终点的路程。

Aren't you usually the second count backwards? What to do with so bad result?

补考。我的成绩一直很稳定。因为平时考倒数第一的人生病了。

Aren't you usually the second count backwards?

平时都不是考倒数第二的吗？

I want you to snap your fingers exactly 50 times, or count backwards from 100 by seven, like this: 100, 93... Go!

我想你们打50次的响指，或者从100开始，每隔七位数倒数，100，93……开始！

I could count backwards in this time.

这么久我都可以倒数回去了。

If time can flow backwards, I wish I were still an innocent child, a simple and pure kid!

如果时间可以倒流，我希望我依然是个无知的孩子，一个单纯的小孩！

The Display of X-ray and Clinical Manifestation while 102 Cases Lower-Extremity Deep Vein Flow Backwards Treated by Biological Loop

102例生物袢治疗下肢深静脉倒流性疾病的临床与X线观察

I'd love to return to those carefree days. unfortunately, time cannot flow backwards.

我真想回到从前无拘束、无忧虑的儿时去，可惜光阴不能够倒流。

Calculation of Sediment at the Tail of Tributary under Condition of Flow Backwards

水流倒灌下支流尾闾泥沙淤积计算

If time may flow backwards.

如果时间可倒流。

Rivers don't flow backwards.

河水不会倒流。

Radiation induced deactivation, post deactivation of horse radish peroxidase, glucose oxidase and the protective effect

稀水溶液中辣根过氧化物酶和葡萄糖氧化酶辐射失活、后失活及保护效应研究

Unconsciously, they arrived at a very poor and backward area.

不知不觉间，他们走到一个贫穷落后的地区。

The Analysis on Technical Innovation System Stimulating Jumping Economic Growth in Backward Area

欠发达地区跨越发展的技术创新支撑体系分析&兼议陕西跨越式技术创新战略

Contrastive Analysis of Urbanization between the Economic Developed Area and Backward Area of Guangdong Province

广东省经济发达地区和落后地区城镇化水平比较分析

A Preliminary Discussion on Economic Development of Backward Area In Chongqing

重庆市落后地区经济发展初探

KME650-KMB650 Electrical driven walk-behind sweeper The KME650-KMB650 cleans and picks-up debris during forward and backward movement.

电瓶驱动的推进式清扫机。KME650-KMB650型通过前进和后退来清扫并吸集碎屑。