1. Gas-oil valves are used widely in gas transmission pipelines with stable operating, easily to control and power-free. 气液联动球阀广泛应用于长输天然气管道,具有传动稳定、容易控制、不需要电源等优点。
2. Base on the natural and economical situation, the model of power-free Combining with natural treatment is the suitable for the pig waste treatment in China. 基于我国的自然经济状况,认为我国大多数规模化猪场适宜于采用无动力-然处理模式。
3. Three models of pig waste treatment, returning cropland, power-free combining with natural treatment, mechanization treatment, were put forward in this paper. 本文提出了规模化猪场粪污处理的三种模式:还田、无动力-自然处理以及机械化处理。
4. I also recommend you sign up for his free Humor Power Tips Ezine. 我也推荐你订阅他的免费《幽默能量技巧电子杂志》。
5. And the cost of computing power continues to free fall, which is a good sign for any enterprise setting up shop in silicon. 计算能力的成本持续自由下降,这对任何建立了网上销售的企业来说都是个好的征兆。