barren sand是什么意思

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用法例句

The effects of heat transfer on the performance of oil-free scroll air compressor were analyzed.

针对小型家用制氧机用无油涡旋空气压缩机,分析了散热对压缩机各方面性能的影响机理,对研制样机进行了3种不同冷却方式下的实验研究。

Based on summary and analysis of some oil free slide blocks, an improved oil-free slide block mechanism is presented applying in oil free quadro-flex compressor.

十字滑块压缩机特别适合在一些要求被压缩气体无油的场合。

Involved parameters was selected correctly in order to design reasonablely the oilless lubrication compressors.

为使全无油润滑压缩机设计合理,对涉及的参数进行了选取。

A technology reform was made for the SW-3/7 oilless lubrication air compressor in order to solve its running malfunction.

为排除SW3/7型全无油润滑空压机运行中出现的故障,对其进行了改造。

Experimental research on the oilless lubrication compressor;

全无油润滑压缩机的试验研究

The reasonable selection about the parameters of radius-length ratio and speed of small-type oilless compressors was given.

通过对小型无十字头压缩机的受力分析和试验研究, 阐述了重要结构参数径长比λ对活塞环的密封效果及使用寿命的影响, 对小型全无油压缩机的径长比、转速的合理选择进行了分析。

The principle and application status of some kinds oil-free ignition technologies and small oil gun ignition and combustion stabling technology in China are summarized.

综述了几种主要无油点火燃烧技术和小油枪点火及稳燃技术的原理、技术特点及国内应用现状,并对等离子、高温空气直接点火技术和小油枪点火及稳燃技术进行了经济技术指标比较。

For the oil-saving technology in some power plants,the plasma ignition has already been a mature oil-free ignition technology.

在电站节油技术中,等离子点火技术已经是一项成熟的无油点火技术。

The ignition mechanism of four kinds of methods of oil-free ignition for pulverized coal air flow and their burners are studied.

对4种煤粉气流无油点火技术的点火机理及其燃烧器进行了研究。