these early headphones used moving iron drivers, either single ended or balanced armature.

1、

and two flat oil grooves are formed at the junction part of the ejector rod and the moving iron core.

在顶杆与活动铁心的接合部位设有两个扁平状油槽。

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2、

rdbms-like attribute indexing support, where you can create indexes directly on selected attributes of a document

类似于RDBMS的属性索引支持，您可以直接在文档的选定属性上创建索引

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3、

at the same time, ruby uses some syntax conventions that make method calls look like attribute access looks in other languages.

同时，Ruby使用了某些语法约定，使方法调用类似于其他语言中的属性访问。

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4、

if the information is required to be in a standard dtd-like attribute type such as id, idref, or entity, use an attribute.

如果信息需要作为类似标准DTD的属性类型，如ID、IDREF或ENTITY，则使用属性。

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5、

analysis on china low voltage equipment market

中国低压电器市场分析研究

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6、

high-voltage test techniques for low-voltage equipment - test equipment

低压设备的高压试验技术.试验设备

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7、

cable bridge. muxian cao. low-voltage equipment.

电缆桥架。母线槽。低压成套设备。

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8、

high-voltage test techniques for low-voltage equipment. part 2 : test equipment.

低压设备的高压测试技术.第2部分：试验设备

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9、

high-voltage test techniques for low-voltage equipment. part 1 : definitions, test and procedure requirements.

低压设备的高压试验技术.第1部分：定义、试验和方法要求

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10、

flow chart and state matrix can be used to identify and design sequential circuits in the basic low voltage equipment.

基本低压电器时序电路可用流图和状态矩阵来进行规范系统识别和设计。

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11、

frequency transformation of low-voltage equipment, low investment and quick return on investment period of about a year basically.

低压设备变频调速改造投资少、见效快，投资回报期基本上在一年左右。

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12、

build-up a digitalized yellow river, promote water management modernization in the yellow river

数字黄河工程建设推动黄河水利现代化进程

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13、

research on implementation of digital environmental protection project

数字环保工程实施方法研究

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14、

building scheme and progress of digital huanghe engineering

数字黄河工程的建设框架及工程进展

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15、

constructing china national digital library and opening up a bright future of chinese culture

建设中国数字图书馆工程开创中华文化光辉的未来

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16、

digitalization of local documents: the information foundation for china digital library project

地方文献数字化：中国数字图书馆工程的信息基础

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17、

enduring the development of digital shipbuilding and setting up the modern shipbuilding pattern

持续推进数字造船工程，加速建立现代造船模式&应长春研究员采访录

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18、

study on multi-source information synthesis in digital city construction

数字城市工程多源信息复合研究

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19、

a tail-difference algorithm and its application in digital measure engineering

尾数求差计算法及其在数字测量工程上的应用

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20、

primary study on establishing digital land and resources engineer in heze city

关于建设菏泽数字国土工程的初步探讨

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