因此一个教学大纲在最后获得批准之前常常要经过多次修改。
So it is common that a syllabus has to undergo several drafts before it is finally approved.
此框架存在的历史最久，已经经过多次修改和bug修正以使其用于产品用途时更加稳定。
This framework has been around the longest, and has been through many revisions and bug fixes to make it stable for production use.
经过多次修改，目前也有管理结构化数据、动态数据配置、递归(过程调用自身)等等功能。
It has been revised several times and now includes capabilities for handling structured data, dynamic data allocation, recursions (procedures that call themselves), and other features.
好的转学申请作文通常要经过多次修改；如果你有让人信服的转学原因，你的同学和教授将在这一环节对你有所帮助。
The best transfer essays always go through multiple rounds of revision, and your peers and professors will want to help you with the process if you have good reasons to transfer.
经过多次试验和反复补充修改设计，最终制成了一台具有较高性能指标的高压开关电源样机。
After many times tests and modifying design, a sample machine of switch high voltage power supply with high performance index is finished.
回转收料器经过多次的修改完善，已趋相当完美，是毒性物料凝华过程收料的理想设备。
It has been proved in practice that it is ideal equipment to collect toxic medium in sublimation process.
回转收料器经过多次的修改完善，已趋相当完美，是毒性物料凝华过程收料的理想设备。
It has been proved in practice that it is ideal equipment to collect toxic medium in sublimation process.
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