The reason is that we need references to both ProgressBars as arguments to the callback, and at the time the Scale constructor is invoked, they are not all defined yet.
原因在于，我们需要以对两个ProgressBar的引用作为回调的参数，而当Scale构造函数被调用时，它们还没有被定义。
The building's location within a conservation area prompted the architects to develop a proposal that is sympathetic to its context, and references the scale of the neighbouring buildings.
建筑的位置在交流区内，促使建筑师想出一个建议——支持其所处的环境，并参考邻近建筑物的规模。
Through introducing the successful example, the article could hopefully furnish valuable references for the design, operation and commissioning of future large-scale W flame boilers in China.
本文作为大容量W型火焰锅炉的成功范例，可为我国今后大容量W型火焰锅炉的设计、运行调整提供参考。
Being simple and easy, the technology can provide references for the large-scale promotion of the wine.
试验生产工艺简单易行，为黑糯米发酵酒的大规模推广提供了借鉴。
The techneques of scale prevention and cleaning of polymerization reactors, and their application to the suspension polymerization reactors were reviewed with 22 references.
综述了聚合反应器的防粘釜和清釜技术，并简介在悬浮聚合反应器中的应用。
The techneques of scale prevention and cleaning of polymerization reactors, and their application to the suspension polymerization reactors were reviewed with 22 references.
综述了聚合反应器的防粘釜和清釜技术，并简介在悬浮聚合反应器中的应用。
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