The toolbar code is interesting -- Mozilla XUL allows for modern toolbar styles that include both direct activation and child pull-downs.
工具栏代码很有意思，MozillaXUL 支持现代风格的工具栏，既有直接激活的按钮，也有包含下拉子菜单的按钮。
Threaded brass inserts shall withstand a direct pull force exceeding 1,500 lbs per insert.
每个螺纹黄铜嵌入件应该经受超过1，500磅的直接拉力。
Use Direct Selection Tool to pull it down.
使用直接选择工具把它拉下来。
The chopper control has been widely used in the direct pull govern. Compared with the traditional way of govern, it has a good adjusting capacity, simple operation and economical.
斩波控制广泛应用于直流牵引调速，与传统的调速方法相比较，它调速性能好，操作简单，经济节能。
The chopper control has been widely used in the direct pull govern. Compared with the traditional way of govern, it has a good adjusting capacity, simple operation and economical.
斩波控制广泛应用于直流牵引调速，与传统的调速方法相比较，它调速性能好，操作简单，经济节能。
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