实体ID stringclasses 5
values | md5 stringclasses 7
values | 块ID int32 0 3 | 块类型 stringclasses 4
values | 扩展字段 stringclasses 7
values | 时间 stringclasses 2
values | 页ID int32 0 3 ⌀ | 文本 large_stringclasses 5
values | 图片 dict | 视频 dict | 音频 dict | OCR文本 large_stringclasses 0
values | STT文本 large_stringclasses 0
values |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
mnbvc_mm_example | 05b939ec58d5fce356234bf318e6dadf | 0 | text | {"文本长度": 12} | 20240710 | null | 这是一条 demo 数据 | null | null | null | null | null |
mnbvc_mm_example | 96771bf3684db83c71e731d5e37ee449 | 1 | image | {"宽度": 200, "高度": 200} | 20240710 | null | null | {
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mnbvc_mm_example | 59c37c58c41a4da685b474e4c0f89a10 | 2 | audio | {"长度": 5, "采样率": 44100} | 20240710 | null | null | null | null | {
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86e715165192b9f20bceb7c9d5c0b9b5c1d3188a211a1a5c313b6b12c649fd0b-page-0 | e219cbd054acadf3a6bb96eff100393b | 0 | image-text-pair | {"page_id": 0, "page_image_size": {"width": 1466, "height": 2097}, "page_text_length": 398, "render_dpi": 200, "extractor": "mupdf", "width_pt": 527.4625244140625, "height_pt": 754.90087890625, "doc_id": "86e715165192b9f20bceb7c9d5c0b9b5c1d3188a211a1a5c313b6b12c649fd0b", "doc_n_pages": 8, "source": "pdfsys.page/v2"} | 20260822 | 0 | 175
第4 章 电路图的识读
续表 型
号 电 路 图 型 号 电 路 图
(r)双调
（g）混合
谐电容
跟随器
耦合
（h）电
(s)双端
流负反
输入双
馈放大
端输出
器
（i）多级
(t)双端
阻容耦
输入单
合放大
端输出
器
（j）电流
(u)单端
串联负
输入单
反馈
端输出
（k）电
(v)单端
压串联
输入双
负反馈
端输出
2）正弦波振荡电路。常用的正弦波振荡电路有：变压器互感耦合式振荡电路、电感三点 式振荡电路、电容三点式振荡电路、用石英晶体构成的振荡电路等。常用的正弦波振荡器电路 原理图，见表4-13。 3）功率放大电路。常用的功率放大... | {
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86e715165192b9f20bceb7c9d5c0b9b5c1d3188a211a1a5c313b6b12c649fd0b-page-1 | bcd8b70ac3ccb461c692713d8947c6d9 | 1 | image-text-pair | {"page_id": 1, "page_image_size": {"width": 1338, "height": 1930}, "page_text_length": 440, "render_dpi": 200, "extractor": "mupdf", "width_pt": 481.6141052246094, "height_pt": 694.5982055664062, "doc_id": "86e715165192b9f20bceb7c9d5c0b9b5c1d3188a211a1a5c313b6b12c649fd0b", "doc_n_pages": 8, "source": "pdfsys.page/v2"} | 20260822 | 1 | 第一部分 第二部分 第三部分 073
二
三
一
二
三
一
二
三
六
一
四
四
五
四
重点提示
在湿地公园中大面积应用的荇菜
◆荇菜形态似微型睡 莲，花虽小，但密集 成片，有着不同情调 的景观效果。在长江 流域及以南地区的冬 季，荇菜还常以常绿 或半常绿形式生长； 在炎热的夏季长势缓 慢，在浅水水域甚至 出现枯黄现象。
◆莼菜属于一种高贵、 优良的水生蔬菜，但 产出比不高。在工程 应用上，可结合其经 济功能综合考虑配置。
盛花期的荇菜
工程应用 ◎品种、类似种
荇菜叶片翠绿，小黄花密集， 精巧别致，是优良的小型浮叶 景观植物。
荇菜属有数个原生品种，外形差异不大。有景观效果类似的同... | {
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86e715165192b9f20bceb7c9d5c0b9b5c1d3188a211a1a5c313b6b12c649fd0b-page-2 | 3bc47da1f8d345702830daa45a075179 | 2 | image-text-pair | {"page_id": 2, "page_image_size": {"width": 1700, "height": 2200}, "page_text_length": 3278, "render_dpi": 200, "extractor": "mupdf", "width_pt": 612.0, "height_pt": 792.0, "doc_id": "86e715165192b9f20bceb7c9d5c0b9b5c1d3188a211a1a5c313b6b12c649fd0b", "doc_n_pages": 8, "source": "pdfsys.page/v2"} | 20260822 | 2 | A n n u a l W h e a t N e w s l e t t e r V o l. 4 9.
Table 4. Top wheat cultivars planted in Kansas by district and percent of seeded acreage.
DISTRICT 10 (NORTHWEST) DISTRICT 40 (NORTH CENTRAL) DISTRICT 70 (NORTHEAST) Jagger 23.0 Jagger 23.6 2137 32.3 TAM 107 13.5 2137 16.0 Karl/Karl 92 22.7 2137 12.9 Karl/Karl 92 ... | {
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86e715165192b9f20bceb7c9d5c0b9b5c1d3188a211a1a5c313b6b12c649fd0b-page-3 | 72cba1a2ef4c1c581762dd9d46e793fd | 3 | image-text-pair | {"page_id": 3, "page_image_size": {"width": 1738, "height": 2274}, "page_text_length": 6808, "render_dpi": 200, "extractor": "mupdf", "width_pt": 625.4359741210938, "height_pt": 818.3619995117188, "doc_id": "86e715165192b9f20bceb7c9d5c0b9b5c1d3188a211a1a5c313b6b12c649fd0b", "doc_n_pages": 8, "source": "pdfsys.page/v2"} | 20260822 | 3 | ACS Nano Article
comparison with reported CTS materials, CV curves, GITT calculations, CV calculations, and synthetic mechanisms (PDF)
AUTHOR INFORMATION
Corresponding Authors *E-mail: dlpeng@xmu.edu.cn. *E-mail: hangguo@xmu.edu.cn. *E-mail: mullins@che.utexas.edu. ORCID Jie Lin: 0000-0002-1281-9713 Duck Hyun Youn: ... | {
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