We examined the microorganisms in reservoir water and obtained some corrupted the steel in reservoir, with multi tube fermentation method.
采用多管发酵培养法检测水样中致腐蚀菌并富集出测试菌群。
To improve efficiency and veracity of soil sampling in testing bulk density, the cutting ring method and in situ soil tube method were combined and a multi-segment in situ soil sampler was designed.
为了提高土壤容重测定中土样采集的效率和精准性，将环刀法和原状取土管法结合，进行了分段式原状取土器的研制。
Firstly, formula of stream tube method was summarized including single disk multi-tube model and double disk multi-tube model.
首先，对流管法计算公式进行归纳总结，包括单盘面-多流管模型和双盘面-多流管模型。
Use single stage version to reach the temperature of 20 K is a difficulty for high frequency pulse tube cooler (PTC). Multi-stage version is a popular method to reach the low temperature.
单级高频脉冲管制冷机直接降低到20K以下温区存在很大困难，采用多级方案是高频脉冲管制冷机获得更低温度的主要方法。
According to production experience, the cracks reason of D97 multi-port tube during continuously extruding is analyzed. The improvement method is also presented.
根据生产经验，分析了D 97多孔扁管连续挤压时开裂的原因，并提出了改进措施。
Methods The water samples were collected from Xinkai River in Shenyang. The comparative experiments were carried out between rapid paper strip method and multi-tube fermentation method.
方法选择沈阳市新开河地表水，采用纸片快速法与多管发酵法进行对比实验。
This paper describes the optimal design for the rocker mechanism of multi-strand and multi-roller cold tube-rolling mill with balancing method of double-noses.
本文讨论了具有双机头平衡方式的多线多辊式冷轧管机摇杆机构的优化设计。
This paper describes the optimal design for the rocker mechanism of multi-strand and multi-roller cold tube-rolling mill with balancing method of double-noses.
本文讨论了具有双机头平衡方式的多线多辊式冷轧管机摇杆机构的优化设计。
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