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港科大学者研发液晶弹性体,能提起自重450倍的重物,可用于人造 ...
比如,在植物的叶孔结构中,叶孔的开合程度对于温度是一个非单调的函数关系:即在低温下叶孔处于微张开的程度来实现与环境中水汽的交换;如果环境温度有一定的上升,那么叶孔将会打开来给植物降温;如果该环境温度上升突破了一个阈值,那叶孔将会关闭来保证植物不会由于 ...
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今日热点
Grammy winning singer dies
MSNBC cancels Reid’s show
LA death row inmate dies
Blast near Russian Consulate
Announces retirement
Gets 20 years in prison
3 dead after boat capsizes
Search warrants challenged
Russian invasion anniversary
Plans to add 20,000 US jobs
Pope Francis awake, resting
2022 parade shooting trial
Named FBI deputy director
SAG Awards winners
To invest $52B+ in AI
1,600+ workers to be fired?
Wins NASCAR Cup race
LA DA opposes new trial
Former All-Star pitcher dies
PA hospital shooting
Largest drone attack on UKR
Sports gambling probe
Receives Chairman's prize
Earns 100th World Cup win
Security issue diverts flight
Israel's tanks in West Bank
Files motion to dismiss case
Kentucky flooding death toll
Patel to be named ATF chief?
5 found dead in IN home
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