The devices in SDH network must have the function of extracting timing reference from STM-N.
SDH网络设备必须具有从STM - N线路信号中提取定时参考的功能。
The devices in SDH network possess the function of extracting timing reference from STM-N.
SDH网络设备必需具有从STM - n线路信号中提取定时参考的功能。
Based upon the control specifications and corrosion factors, measures for improving LPG quality were presented and were successful in application. This provided useful reference parameters for n...
依据控制指标和腐蚀因素，提出了改进液化石油气质量的措施，并在应用后取得了成功，为正常生产提供了可参考的控制参数。
The concentrations of N and S in Sabina chinensis leaf were higher along urban trunk roads and belt highway than at reference site, while those along suburban roads were similar to the reference.
城市干线和绕城公路蜀桧叶片中的N和S含量高于对照点，而城郊公路则接近对照。
Abstract N-acetylneuraminic acid certified reference material was separated by semi-preparation HPLC.
摘要采用半制备液相色谱法制备 N- 乙酰基神经氨酸标准物质。
Abstract N-acetylneuraminic acid certified reference material was separated by semi-preparation HPLC.
摘要采用半制备液相色谱法制备 N- 乙酰基神经氨酸标准物质。
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