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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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TI公司移动终端解决方案，支持GSM/GPRS。
TI公司移动终端解决方案，支持GSM/GPRS。-TI Mobile Terminal solution that supports GSM/GPRS.
- 2022-01-27 14:47:38下载
- 积分：1
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Device Class Definition for Physical Interface Devices (PID)
Device Class Definition for Physical Interface Devices (PID)
- 2023-06-09 22:10:03下载
- 积分：1
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仿真雷达方程，分析了雷达方程参数之间的关系
仿真雷达方程，分析了雷达方程参数之间的关系-radar simulation equation analysis of the radar equation parameters of the relationship between
- 2022-03-12 22:39:06下载
- 积分：1
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介绍了一种运用DSP (数字信号处理器)控制的基于以太网传输的低成本高音质语音
监控系统,该系统主要由语音采集模块和语音传输模块组成。...
介绍了一种运用DSP (数字信号处理器)控制的基于以太网传输的低成本高音质语音
监控系统,该系统主要由语音采集模块和语音传输模块组成。-Introduced the use of a DSP (digital signal processor)-controlled, low-cost Ethernet-based high-quality transmission of voice control system, the system mainly by the voice acquisition module and voice transmission module.
- 2022-03-05 05:45:53下载
- 积分：1
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EMC desing rule in NEC design
EMC desing rule in NEC design
- 2022-02-12 23:51:18下载
- 积分：1
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QPSK的详细设计流程，及仿真图像，是做设计的重要参考。
QPSK的详细设计流程，及仿真图像，是做设计的重要参考。-QPSK the detailed design process, and the simulation images, are doing an important reference for the design.
- 2022-12-11 18:50:03下载
- 积分：1
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利用VC_开发图像采集卡与图像预处理库 可用于视觉检测系统
利用VC_开发图像采集卡与图像预处理库 可用于视觉检测系统
- 2022-07-14 16:03:35下载
- 积分：1
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1. Completed/min/sec display and correctly followed by counting, using six digit...
1. 完成时／分／秒的依次显示并正确计数，利用六位数码管显示；
2. 时／分／秒各段个位满10正确进位，秒／分能做到满60向前进位，有系统时间清零功能；
3. 定时器：实现整点报时，通过扬声器发出高低报时声音；
4. 时间设置，也就是手动调时功能：当认为时钟不准确时，可以分别对分／时钟进行调整；
5. 闹钟：实现分/时闹钟设置，在时钟到达设定时间时通过扬声器响铃。有静音模式。
-1. Completed/min/sec display and correctly followed by counting, using six digital tube display 2. When/min/sec in the paragraphs of the correct 10-bit binary full, s/sub can do to advance the age of 60-bit, systematic function of the time cleared 3. timers: realize the whole point of time, by the time the level of sound from loudspeakers 4. time settings, which is manually adjusted when the function: When the clock does not consider accurate, they can respectively sub/clock adjustments 5. alarm clock: the realization of sub-/ when the alarm clock settings, settings in the clock arrival time ringing through the loudspeakers. There are silent mode.
- 2023-02-10 00:20:03下载
- 积分：1
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Bluetooth and Infrared and USB technical documentation, Bluetooth and Infrared a...
ZIGBEE技术文档,ZIGBEE是下一代无线通信技术-Bluetooth and Infrared and USB technical documentation, Bluetooth and Infrared and USB is the next generation of wireless communication technology
- 2022-08-24 02:42:38下载
- 积分：1
