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QT interval - Wikipedia

The QT interval is a measurement made on an electrocardiogram used to assess some of the electrical properties of the heart.It is calculated as the time from the start of the Q wave to the end of the T wave, and approximates to the time taken from when the cardiac ventricles start to contract to when they finish relaxing. An abnormally long or abnormally short QT interval is associated with an ...

Qt | Definition of Qt by Merriam-Webster

What does the abbreviation qt stand for? Meaning: quantity.

Long QT syndrome - Symptoms and causes - Mayo Clinic

Long QT syndrome is a heart rhythm disorder caused by abnormalities in the heart's electrical recharging system. The heart's structure is normal. Normally, the heart sends blood out to the body during each heartbeat. The heart's chambers contract and relax to pump the blood. This coordinated action is controlled by your heart's electrical system.

New Features in Qt 5.9 - Qt Wiki

Qt Quick OpenGL shader program binaries used by QtGui (QPainter's GL paint engine) and the Qt Quick scenegraph are now cached on disk, improving application startup and view initialization times. Added an OpenVG backend for Qt Quick. Window-screen associations can now be made directly from QML via Window.screen and Qt.application.screens.

GitHub - duganlx/QT: qt图形界面编程入门

qt图形界面编程入门. Contribute to duganlx/QT development by creating an account on GitHub. Analytics cookies. We use analytics cookies to understand how you use our websites so we can make them better, e.g. they're used to gather information about the pages you visit and how many clicks you need to accomplish a task.

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