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心率指心脏每分钟搏动的次数, 它能够反映心脏的工作状态。正常心率决定于窦房结的节律性, 成人静息时约60~100 次/ min , 平均约75次/ min。心率...
心率指心脏每分钟搏动的次数, 它能够反映心脏的工作状态。正常心率决定于窦房结的节律性, 成人静息时约60~100 次/ min , 平均约75次/ min。心率可因年龄、性别及其他因素而变化。初生儿心率约130 次/ min , 随年龄增长而逐渐减慢, 至青春期乃接近成人的心率。女性心率比男性稍快 运动员心率较慢。成人安静心率超过120 次/ min 者, 为心动过速 低于40 次/ min 者为心动过缓。心率受植物性神经和体液因素调节。-Heart rate means the number of pulse per minute, it can reflect the work of the state of the heart. Normal heart rate determined by the rhythm of the sinoatrial node, resting adult is about 60 ~ 100 times/min, an average of about 75 times/min. Heart rate may be due to age, gender and other factors change. Heart rate of newborn infants of about 130/min, growth has gradually slowed down with age, to adolescence adult heart rate is near. Women slightly faster rate than men athletes slow heart rate. Quiet adult heart rate over 120 times/min, and for the tachycardia less than 40 times/min for bradycardia. Heart rate by the plant regulate neural and humoral factors.
- 2022-01-25 17:00:58下载
- 积分:1
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PCI bus more learning materials, a total of seven documents, a comprehensive und...
PCI总线详细学习资料,共7个文档,全面了解PCI总线-PCI bus more learning materials, a total of seven documents, a comprehensive understanding of PCI bus
- 2022-03-04 03:47:13下载
- 积分:1
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定制OPB外设连接使用LCD和MicroBlaze处理器
利用 OPB 定制外设连接 LCD 和 MicroBlaze 处理器-Custom OPB peripheral connectivity using LCD and MicroBlaze processors
- 2022-12-20 03:05:03下载
- 积分:1
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射频识别芯片在汽车智能防盗报警装置中的应用,较之普通的磁卡和IC 卡,RFID技术具有使用方便、数据交换速度快、便于维护和使用寿命长等优点。特别是它解决了无源(
射频识别芯片在汽车智能防盗报警装置中的应用,较之普通的磁卡和IC 卡,RFID技术具有使用方便、数据交换速度快、便于维护和使用寿命长等优点。特别是它解决了无源(卡中无电源)和免接触这两大难题。-Radio frequency identification chip in the smart car anti-theft alarm device, compared with ordinary magnetic cards and IC cards, RFID technology has the ease of use, data exchange speed, ease of maintenance and long life etc.. In particular, it has resolved a passive (no power supply card) and free access to these two problems.
- 2022-08-19 08:43:26下载
- 积分:1
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borland的uml设计包
borland的uml设计包-the uml design package
- 2022-02-22 02:05:56下载
- 积分:1
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This document related to CBIR
This document related to CBIR - Content Based Image Retreival System. Average RGB concept is used.-This document related to CBIR- Content Based Image Retreival System. Average RGB concept is used.
- 2022-01-25 21:40:19下载
- 积分:1
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AR9开发技术文档,针对三星公司S3C2410芯片。
AR9开发技术文档,针对三星公司S3C2410芯片。-AR9 develop technical documentation for Samsung S3C2410 chips.
- 2022-08-17 01:34:15下载
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流媒体 视频多描述编码 会议论文 清华大学课程指定阅读文献...
流媒体 视频多描述编码 会议论文 清华大学课程指定阅读文献-Multiple description coding for overlay network streaming.pdf
Multiple description video multicast in wireless ad hoc networks.pdf
Adaptive peer-to-peer video streaming with optimized flexible multiple description coding.pdf
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- 2022-02-22 10:28:59下载
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: 通过 L V D S ( 低压差分信号) 传输方案与单个 L C o S ( 硅基液晶) 分时分色显示, 设计主电路
与头盔结构分离的单 L C o...
: 通过 L V D S ( 低压差分信号) 传输方案与单个 L C o S ( 硅基液晶) 分时分色显示, 设计主电路
与头盔结构分离的单 L C o S 硅片彩色头盔显示系统。-: Through the LVDS (Low Voltage Differential Signaling) transmission scheme with a single LC o S (Liquid Crystal on Silicon) color separation time showed that the design of main circuit and the structure of the separation of single-helmet LC o S silicon color helmet display system.
- 2022-01-21 19:50:04下载
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drive smt160 whith icp and int
drive smt160 whith icp and int
- 2022-06-14 22:59:24下载
- 积分:1