(a) Describe how air is made to enter the lungs during inspiration.during inspiration, diaphragm muscles contracts and diaphragm flattens;external intercostal muscles contract, internal intercostal muscles relax;rib cage moves outwards and upwards; volume of thoracic cavity increases,pressure decreases; ...
New variables are introduced for a better thermodynamic representation of the air in the case we are interested in a wide to large scale or in sites at different altitudes above the average sea level or if we need to interpret weather maps for survey purposes. The parameters are equivalent ...
(iii) Describe what happens to the water vapour in the intercellular air spaces during the day and explain why this happens.相关知识点: 试题来源: 解析 在白天,植物通过叶片的气孔进行蒸腾作用,释放水蒸气到大气中。这是因为光照和高温会增加植物体内水分的蒸发速率,同时也会增加大气对水蒸气的容纳能力,...
anatural ventilation,or natural draft ,is the term used to describe mine airflow resulting from a pressure differential caused by unequal densities or weights of two connected air columns 自然透气或者自然通风,是用于的规定描述矿气流起因于不同等的密度或重量造成的压力差别二个连接的空气专栏[translate]...
The surprising experiment I am about to describe proves that air is all around you and that it presses down upon you.Air pressure is a powerful force.When you swim underwater,you can feel water pushing on your body.The air all around you does the same.However,your body is so used to ...
Example of an API definition fileapi.tswhich defines a singlePOSTendpoint to create a user: import{api,endpoint,request,response,body}from"@airtasker/spot";@api({name:"My API"})classApi{}@endpoint({method:"POST",path:"/users"})classCreateUser{@requestrequest(@bodybody:CreateUserRequest){...
this. The pressure is caused by a layer of air called the atmosphere. This layer surrounds the Earth, extending to about five kilometers above the Earth's surface. The following experiment is an easy one that you can do at home. But make sure that you are supervised, ...
United States Air Force first used the words “Unidentified Flying Object” to describe them. Today everyone uses the term UFO. When people see a UFO, it is usually no more than a weather balloon or an airplane. But the Center for UFO Studies goes on to receive hundreds of reports each ...
Measurement device for measuring the air flow in an air duct or channel has an impeller mounted in the channel with its hub positioned at the center of the channel. The vanes of the impeller extend almost to the side of the channel so that they describe a circle whose diameter is only ma...
The heat and electricity from the compound parabolic concentrated-photovoltaic thermal collector are fed to air source heat pump to increase the efficiency of the air source heat pump." 展开 关键词: Beijing People’s Republic of China Asia Electronics Photovoltaic Sustainability Research Beijing ...