English
全部
搜索
图片
视频
地图
资讯
Copilot
更多
购物
航班
旅游
笔记本
Top stories
Sports
U.S.
Local
World
Science
Technology
Entertainment
Business
More
Politics
时间不限
过去 1 小时
过去 24 小时
过去 7 天
过去 30 天
最佳匹配
最新
生物通
7 个月
形状记忆合金增强3D打印混凝土的弯曲性能与裂缝自修复机制研究
针对3D打印混凝土(3DPC)抗弯强度低、易开裂等问题,印度Pandit Deendayal能源大学团队创新性地采用形状记忆合金(SMA)作为增强材料,通过三点弯曲试验( ASTM C78 )和超声波脉冲速度( UPV, ASTM C597 )测试,发现0.5% SMA掺量可使弯曲强度(fb)提升140%至8.67 MPa,并实现35.53%的 ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果
今日热点
Addresses nation on Iran
SCOTUS casts doubt on bid
Launches Artemis II mission
Death ruled homicide
Detroit Lions sign Clark
To address US Congress
Hospitalized in New York
DHS reverses Noem’s policy
Russian military plane crashes
Oil prices fall
Migrant boat capsizes
NK ex-IOC member dies
US retail sales rise
US lifts sanctions
Transfer portal rule changes
Lin Bin buys 1% of Dolphins
Call for Iran peace talks
GOP leaders on DHS shutdown
Detroit college building fire
Trial delayed to October
Tied to millions of prebirths?
Former Wisconsin TE dies
Fleetwood Mac star attacked
WC qualifying marathon ends
Pistons clinch division title
Judge rejects IRS pact
Lost dog rescued by copter
Alabama gov. hospitalized
Trump threatens NATO exit
FDA approves weight-loss pill
Confidentially files for IPO?
US private payrolls increase
Fired female referee sues NFL
Injures right hamstring
Return to work order blocked
Robotaxi outage in Wuhan
反馈