Pdv It's an isothermal expansion, so dw is just negative p dV.

Establishment and Application of Detection of Prune Dwarf Virus ( PDV) by RT-PCR

李矮缩病毒RT-PCR方法建立及检测应用

The shock of the explosion could be felt up to six miles away.

爆炸引起的剧烈震荡在六英里之外都能感觉到。

Children here walk several miles to school.

这里的孩子去上学要步行好几英里。

The ship lay at anchor two miles off the rocky coast.

船在离岩岸两英里处抛锚停泊。

We've come 50 miles this morning.

我们今天上午走了50英里。

We walked along the coast for five miles.

我们沿着海岸步行了五英里。

The road went on for miles and miles.

这条道路绵延数英里。

In the US, distance is measured in miles.

在美国，测量距离以英里作单位。

Drivers in London can expect to average about 12 miles per hour.

估计伦敦的驾车者平均时速为12英里。

We had to stop every few miles.

我们每走几英里就得停一停。

She thinks nothing of walking thirty miles a day.

她认为一天步行三十英里不足为奇。

I'm not walking ─ it's miles away.

我不会走着去的——太远了。

The river is 300 miles in length.

这条河长300英里。

Miles of sand are exposed at low tide.

在低潮时数英里的沙滩就会显现出来。

They followed the line of the river for three miles.

他们沿着那条河走了三英里。

It's two miles to the beach.

距离海滩两英里远。

Walking four miles in an hour is pretty good going for me.

一小时走四英里对我来说是相当不错了。

The village lies five miles due north of York.

这个村庄位于约克正北五英里处。

It's 30 miles round trip to work.

上班要走往返30英里的路程。

Keep straight on for two miles.

一直向前走两英里。