grout mixer and pump 灰浆混合泵送装置
sump and pump system 抽水及供水系统
equipment and pump area 设备和泵区
fan and pump shaft 风扇与水泵轴
blower and pump 风机泵
Spool and Pump Designer 线管和水泵设计
wheel and bucket pump 戽斗水车 ; 斗轮水车 ; 斗轮水车戽斗水车 ; 斗轮大水车
power plant fan and pump 电站风机和水泵
Some villages do not have a well and pump, so they have to fetch water with containers from miles far away.
一些村庄没有井和水泵,所有他们要用容器去很远的地方取水。
Your baby’s heart begins to beat and pump blood this week.
这一周婴儿的心脏将会开始跳动和供血。
Make the electric windings out of copper pipe instead of wire and pump helium through them.
把线圈放到铜管外面,而不是让金属丝和泵氦通过其中。
Uttar Pradesh has three treadle pump manufacturers and more than seventy-three thousand pumps.
VOA: special.2009.08.17
You do it so quickly that the heat flow between the inside of the bicycle pump and the outside is too slow compared to the speed at which you compress.
我们用力很大,于是压缩得很快,打气筒内外热传递的速度,与之相比要慢得多。
You're taking the air inside of the pump and you're compressing it. You're doing it so fast that there's not enough time for heat to come out of the gas that's inside the pump towards the walls of the pump.
你把空气吸进气筒里并且压缩它,你的动作很快以至于,没有足够的时间让热量,从气筒里面跑出来,传递到气筒壁上。
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