The use of DDST in china: Retrospect and Prospect

1、

DDST results and analysis of 397 children in IDD area

397名碘缺乏病区儿童DDST测试结果分析

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2、

Application of DDST in assessing development of infants

应用丹佛发育筛查法评价婴幼儿发育状况

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3、

Deciduous Chinese shrub or small tree with often trilobed leaves grown for its pink-white flowers.

中国种每年落叶灌木或小型树种，三裂片树叶，粉红到白色花冠。

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4、

The operation condition of a series feedback type of de-Q circuit is analysed in detail and the main design formula is deduced. The new practical circuit, the solid state scheme of the parallel feedback type de-Q circuit for high voltage and high power is also presented.

本文详细地分析了串联反馈型de-Q电路的工作状态，推导出主要的设计公式，给出了新的实用电路，提出了高压大功率的并联反馈型de-Q电路的固态化方案。

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5、

The advantage of PIN low impedance with assembly method is proposed, and an improved method for de-Q circuit design is also presented.

提出了采用组合式调制器达到PFN低阻抗的优点，对de－Q电路设计也提出了改进意见。

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6、

A Solid-state Feedback de-Q Charging Technology of High Power and High Voltage Line Type Pulse Modulator

大功率调制器的固态反馈型de-Q充电技术

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7、

Internal thread tapping is one of the most demanding machining operations.

内螺纹加工在机械加工中占有重要地位。

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8、

Radial Extrusion Mould for the Internal Thread Spline

内螺旋花键径向挤压模

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9、

Parallel pins with internal thread

GB/T120-1986内螺纹圆柱销

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10、

An Experimental Exploring on Machining Internal Thread of Hardened Steel by EDM

电火花加工淬火钢螺纹孔的实验探讨

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11、

Compressed Internal Thread and Its Application in Electronic Products

挤压内螺纹在电子产品中的应用研究

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12、

Study on Processing Method for Cold Extrusion in Internal Thread of Knuckle Axis

挂钩轴内螺纹冷挤压成形方法研究

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13、

The CAT System Software Design for Internal Thread of Joint

油套管接头螺纹CAT系统软件的设计与开发

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14、

The practice shows the measurement is efficient on overcoming the defect of internal thread.

生产实践证明，相应的纠正措施对克服内螺纹缺陷起到明显的效果。

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15、

Component parts with bore such as pin valve, internal thread, oil pipe take up a large proportion in the oil industry, chemical industry and modern manufacturing industry.

孔类零件如针阀体、内螺纹、油管等在石油、化工和现代制造业中占有相当大的比重。

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16、

Design of the Injection Mould with Eject Plate& Screw Rod Structure for Auto_demoulding of Internal Thread

推板螺杆式自动脱内螺纹注射模设计

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17、

This paper discusses the mechanical, hardware, software configurations and principles of CAT system for joint internal thread in details.

详细介绍了油管接箍内螺纹计算机辅助测量系统的机械、软硬件结构与原理。

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18、

To solve the disadvantage of traditional contract measurement method for internal thread, a non-contract measuring method based on the theory of fiber-optic sensor was introduced.

针对传统内螺纹参数接触测量方法的不足，提出采用光纤位移传感的方法实现内螺纹参数的非接触测量。

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19、

The utility model relates to a tool for measuring internal thread depth of mechanical parts.

本实用新型涉及机械零件的内螺纹深度测量工具。

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20、

The manufacturers find it difficult to detect the steel pipes with extra deep internal thread groove if they do not meet the relative quality standards.

内螺纹槽超深的钢管不符合相关质量标准，但生产厂却难以检测出内螺纹超深的钢管。

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