用中文详细说说：number of steps / limitation of a minimal effective stroke / nominal throttle leakage

步数：步进电机的步数是指电机每次运动所需的步数。步数越多，电机的精度和分辨率就越高。

最小有效行程限制：最小有效行程是指步进电机能够实际控制的最小移动距离。这通常由步进电机的机械结构和控制系统的精度决定。如果尝试移动小于最小有效行程的距离，电机可能无法准确移动或者无法达到所期望的位置。

节气门泄漏：节气门泄漏是指在关闭状态下，节气门仍然存在微小的漏气现象。这可能是由于节气门密封不完全或其他原因造成的。节气门泄漏会导致引擎在怠速时过量进气，影响燃油经济性和稳定性。为了减少泄漏，可以采取改进节气门密封或者进行维护和调整。

相关问题

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This is a file called "DetectorConstruction.cc" which contains the implementation of the "B1::DetectorConstruction" class. It includes a license and disclaimer stating that Geant4 software is copyright of the Geant4 Collaboration and that users must acknowledge its use in resulting scientific publications.

Cef.Shutdown has already been called. Cef.Initialize can only be called once per process. This is a limitation of the underlying CEF/Chromium framework. Calling Cef.Initialize after Cef.Shutdown is not supported. You can change many (not all) settings at runtime through RequestContext.SetPreference.See https://github.com/cefsharp/CefSharp/wiki/General-Usage#request-context-browser-isolation”

嗨，根据你提供的错误信息，似乎你在调用Cef.Initialize之前已经调用了Cef.Shutdown。这是因为CEF/Chromium框架的限制，每个进程只能调用一次Cef.Initialize。在调用Cef.Shutdown后再次调用Cef.Initialize是不被支持的。

如果你需要在程序运行期间更改一些设置，你可以通过RequestContext.SetPreference方法来改变（并非所有）设置。你可以参考链接https://github.com/cefsharp/CefSharp/wiki/General-Usage#request-context-browser-isolation，了解更多关于如何使用RequestContext进行浏览器隔离以及设置的信息。

如果你想要重新初始化CEF，你需要确保在调用Cef.Shutdown之后不再调用Cef.Initialize，并且在程序的生命周期内只调用一次Cef.Initialize。

希望这可以帮助解决你的问题。如果还有其他疑问，请随时提问。