熵1:物理学上指热能除以温度所得的商,标志热量转化为功的程度。
2: 科学技术上用来描述、表征系统不确定程度的函数。
亦被社会科学用以借喻人类社会某些状态的程度。
3:传播学中表示一种情境的不确定性和无组织性。
英文释义:The degree of randomness or disorder in a thermodynamic system.[1]
1.熵是体系的状态函数,其值与达到状态的过程无关;
2.熵的定义式是:dS=dQ/T,因此计算某一过程的熵变时,必须用与这个过程的始态和终态相同的过程的热效应dQ来计算。
(注:如果这里dQ写为dQR则表示可逆过程热效应,R为reversible;dQ写为dQI为不可逆过程的热效应,I为Irreversible。
)
3.TdS的量纲是能量,而T是强度性质,因此S是广度性质。
计算时,必须考虑体系的质量;
4.同状态函数U和H一样,一般只计算熵的变化。my memory is very超级紧急英语初二作文60词
My best memory is from childhood. We used to live in a trailer (haha) and it was at the bottom of a hill. I was probably about five and my brother was three (the littlest was not born yet). Whenever it would rain, our yard would literally fill up like a pool. My mom would put us in our trashiest clothes and call the neighbor kids (who we were all very close to) and we would set up the slide and play in the rain for as long as we could without getting cold. It was an amazing time and I remember it so fondly. My mom was right out there with us. She was a great, involved mother. But just the randomness of being allowed to play in the rain with my friends was so awesome.
野草云月末准备了一些促销,主推独立服务器,也有部分云服务器,价格比较有性价比,佣金是10%循环,如果有时间请帮我们推推,感谢!公司名:LucidaCloud Limited官方网站:https://www.yecaoyun.com/香港独立服务器:CPU型号内存硬盘带宽价格购买地址E3-1230v216G240GB SSD或1TB 企盘30M299元/月点击购买E5-265016G240GB SS...
pacificrack又追加了3款特价便宜vps搞促销,而且是直接7折优惠(一次性),低至年付7.2美元。这是本月第3波便宜vps了。熟悉pacificrack的知道机房是QN的洛杉矶,接入1Gbps带宽,KVM虚拟,纯SSD RAID10,自带一个IPv4。官方网站:https://pacificrack.com支持PayPal、支付宝等方式付款7折秒杀优惠码:R3UWUYF01T内存CPUSS...
CloudCone 商家产品还是比较有特点的,支持随时的删除机器按时间计费模式,类似什么熟悉的Vultr、Linode、DO等服务商,但是也有不足之处就在于机房太少。商家的活动也是经常有的,比如这次中国春节期间商家也是有提供活动,比如有限定指定时间段之前注册的用户可以享受年付优惠VPS主机,比如年付13.5美元。1、CloudCone新年礼物限定款仅限2019年注册优惠购买,活动开始时间:1月31...