English
全部
图片
灵感
创建
集合
视频
地图
资讯
购物
更多
航班
旅游
酒店
笔记本
自动播放所有 GIF
在这里更改自动播放及其他图像设置
自动播放所有 GIF
拨动开关以打开
自动播放 GIF
图片尺寸
全部
小
中
大
特大
至少... *
自定义宽度
x
自定义高度
像素
请为宽度和高度输入一个数字
颜色
全部
彩色
黑白
类型
全部
照片
插图
素描
动画 GIF
透明
版式
全部
方形
横版
竖版
人物
全部
脸部特写
半身像
日期
全部
过去 24 小时
过去一周
过去一个月
去年
授权
全部
所有创作共用
公共领域
免费分享和使用
在商业上免费分享和使用
免费修改、分享和使用
在商业上免费修改、分享和使用
详细了解
重置
安全搜索:
中等
严格
中等(默认)
关闭
筛选器
850×1082
mavink.com
Polyimide Synthesis
653×799
ResearchGate
Chemical structure of the…
1260×668
semanticscholar.org
Figure 1 from Tetramine-Based Hyperbranched Polyimide Membranes wit…
1028×798
semanticscholar.org
Figure 1 from Synthesis of a Novel Hyperbranched Poly…
1434×590
semanticscholar.org
Figure 1 from Tetramine-Based Hyperbranched Polyimide Membranes wit…
924×422
semanticscholar.org
Figure 1 from Synthesis of a Novel Hyperbranched Polyimide for Reinforcing Toughness and ...
1044×410
semanticscholar.org
Figure 1 from Synthesis of a Novel Hyperbranched Polyimide for Reinforcing Toughness and ...
1058×444
semanticscholar.org
Figure 1 from Synthesis of a Novel Hyperbranched Polyimide for Reinforcing Toughness and ...
1140×532
semanticscholar.org
Figure 1 from Synthesis of a Novel Hyperbranched Polyimide for Reinforcing Toughness and ...
850×561
researchgate.net
Scheme 13 Synthetic scheme of star-hyperbranched polyimide (SHB-PI)...
504×720
academia.edu
(PDF) Hyperbranche…
850×381
researchgate.net
Schematic diagram of synthesis of anhydride-terminated hyperbranched... | Download Scientifi…
640×640
researchgate.net
Study on mechanical and electrical properties of the copolymer of bis…
850×1202
researchgate.net
(PDF) Tetramine-Based Hyperbranched Polyimi…
640×640
researchgate.net
Study on mechanical and electrical properties of the copolymer of bis…
850×1129
researchgate.net
Study on mechanical and electrical properties of th…
595×794
academia.edu
(PDF) Modification of bisphenol-A based bisma…
500×355
interface-polymer.nimte.ac.cn
2022年论文成果 - 界面功能高分子材料团队 - interface-polymer.nimte.ac.cn
398×257
x-mol.com
Hyperbranched‐polysiloxane‐based hyperbranched polyimide films with lo…
500×368
x-mol.com
Hyperbranched Polymers with Controlled Degree of Branching f…
404×394
onlinelibrary.wiley.com
Journal of Polymer Science Part A: Polymer Chemistry: Vol 56, No 17
2128×2114
onlinelibrary.wiley.com
Hyperbranched polyimide with triazol…
1240×1014
eureka.patsnap.com
Aromatic hyperbranched polyimide as well as prepa…
1077×885
eureka.patsnap.com
Preparation method and application of hyperbranch…
1312×624
eureka.patsnap.com
Preparation method of hyperbranched polyimide with adjustable branching degree - Eureka | P…
432×422
chemistry-europe.onlinelibrary.wiley.com
Novel Hyperbranched Polyimides Bearing Bi…
1556×960
intechopen.com
Hyperbranched Polyimides Prepared from 4,4 ́,4 ́ ́-Triaminotriphenylmethane and Mixed Matrix ...
978×734
intechopen.com
Hyperbranched Polyimides Prepared from 4,4 ́,4 ́ ́-Triaminotriphenylmeth…
582×591
chemistry-europe.onlinelibrary.wiley.com
Hyperbranched Polymers for Organic Semiconduct…
850×662
researchgate.net
Scheme 1 Synthesis of the hyperbranched polymers. | Downl…
1200×628
pubs.acs.org
Hyperbranched Polymers with Controlled Degree of Branching from 0 to 100% | Journal of the ...
1474×684
semanticscholar.org
Figure 4 from Synthesis of Well-Defined Hyperbranched Polyamides and Linear-Hyperbra…
1886×2955
MDPI
Polymers | Free Full-Text | Des…
378×146
pubs.rsc.org
Hyperbranched polymers: growing richer in flavours with time - Chemic…
378×184
Royal Society of Chemistry
Synthesis of hyperbranched polymers with controlled structure - Polymer Chemistry …
某些结果已被隐藏,因为你可能无法访问这些结果。
显示无法访问的结果
报告不当内容
请选择下列任一选项。
无关
低俗内容
成人
儿童性侵犯
反馈