This paper reported the results of laboratory study and industrial development of the new type non chrome ferrite W-201 catalyst for n-butene oxidative dehydrogenation to butadiene.
本文报导了丁烯氧化脱氢制丁二烯新型无铬铁系w- 201催化剂的实验室研究和工业生产结果。
The development and the experimental result of W alloy welding electrode are expounded in present paper.
本文阐述了钨合金焊条的研制和试验结果。
The research on W-band coherent frequency synthesizers is mainly about scheme chosen, development and test of the components, which constitute coherent frequency synthesizers.
W波段相参频率源技术研究中，主要是实现相参频率源所需要的各个模块方案的选取，各个模块的设计、加工与测试。
The research on W-band coherent frequency synthesizers is mainly about scheme chosen, development and test of the components, which constitute coherent frequency synthesizers.
W波段相参频率源技术研究中，主要是实现相参频率源所需要的各个模块方案的选取，各个模块的设计、加工与测试。
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