英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
339288查看　339288　在百度字典中的解释百度英翻中〔查看〕
339288查看　339288　在Google字典中的解释Google英翻中〔查看〕
339288查看　339288　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • How Blood Flows through the Heart - NHLBI, NIH
    Oxygen-poor blood from the body enters your heart through two large veins called the superior and inferior vena cava The blood enters the heart's right atrium and is pumped to your right ventricle, which in turn pumps the blood to your lungs
  • How the Heart Works - What the Heart Looks Like | NHLBI, NIH
    Your heart is in the center of your chest, near your lungs It has four hollow chambers surrounded by muscle and other heart tissue The chambers are separated by heart valves, which make sure that the blood keeps flowing in the right direction Read more about heart valves and how they help blood flow through the heart Anatomy of the interior of the heart This image shows the four chambers
  • Stents - Living With a Stent | NHLBI, NIH
    Your risk of getting a blood clot is much higher if you stop taking your blood thinners before your provider says to do so Blood clots can lead to life-threatening conditions, such as heart attack, stroke, and venous thromboembolism Restenosis is a re-narrowing of the section of the artery where there is a stent
  • Arrhythmias - Conduction Disorders | NHLBI, NIH
    A conduction disorder, also known as heart block, is a problem with the electrical system that controls your heart’s rate and rhythm Learn about the causes, symptoms, and treatments for conduction disorders
  • How the Heart Works - The Heart | NHLBI, NIH
    The heart is an organ about the size of your fist that pumps blood through your body It is made up of multiple layers of tissue Your heart is at the center of your circulatory system This system is a network of blood vessels, such as arteries, veins, and capillaries, that carries blood to and from all areas of your body Your blood carries the oxygen and nutrients that your organs need to
  • Pacemakers - How They Work | NHLBI, NIH
    A traditional pacemaker generator is placed outside of your heart, either in your chest or abdomen It is connected via wires to electrodes inside one to three heart chambers Single- and double-lead pacemakers send pulses to the right side of the heart A biventricular pacemaker sends pulses to both ventricles and an atrium
  • Heart Failure - Causes and Risk Factors | NHLBI, NIH
    Over time left-sided heart failure can lead to right-sided heart failure In right-sided heart failure, your heart can't pump enough blood to your lungs to pick up oxygen Left-sided heart failure is the main cause of right-sided heart failure That’s because left-sided heart failure can cause blood to build up on the left side of your heart The build-up of blood raises the pressure in the
  • Angina (Chest Pain) - What Is Angina? | NHLBI, NIH
    Angina, also known as angina pectoris, is chest pain or discomfort that occurs when part of your heart muscle does not get enough oxygen-rich blood It is a common symptom of coronary heart disease, which develops when the arteries of the heart become partially or totally blocked Angina pain can feel like pressure, squeezing, tightness, or burning in your chest The discomfort can also spread
  • Heart Failure - What Is Heart Failure? | NHLBI, NIH
    Left-sided and right-sided heart failure may have different causes Most often, heart failure is caused by another medical condition that damages your heart This includes coronary heart disease, heart inflammation, high blood pressure, cardiomyopathy, or an irregular heartbeat Heart failure may not cause symptoms right away
  • Heart Attack - Symptoms | NHLBI, NIH
    If you are having a heart attack, you may experience one or more of the symptoms below Chest pain, heaviness, or discomfort in the center or left side of the chest (this is the most common symptom) Pain or discomfort in one or both arms, your back, shoulders, neck, jaw, or above your belly button Shortness of breath when resting or doing a little bit of physical activity (this is more common





中文字典-英文字典  2005-2009