However, the radial penetration distance of umbrella spray was much shorter than that of multi hole spray and the umbrella spray Angle decreased rapidly in the early stage of spray development.
伞形喷雾径向贯穿距离远小于多孔喷雾，喷雾锥角在喷雾早期急剧减小。
The research achievements can provide referenced basis for both the development of spray heads and the design and installment of water mist fire suppression systems in the future.
本文的研究成果具有较大的理论价值和工程实用性，能为今后细水雾喷头的研制、细水雾灭火系统的设计及安装提供重要的理论和实验依据。
Present situation and development tendency of technical preventing coal spontaneous combustion adopted with plasticity slurry that can spray and pour domestic and international are discussed.
综述了国内外喷注型浆体防煤自燃技术的现状和发展趋势，通过实验，得出塑性石膏浆的配制方案和堵漏风效果。
Use: it is more beautiful color, three-dimensional wall spray paint abroad at present the development of new, or glass factory Caiqiao sandblasting can only wear-resistant materials.
用途：它色多优美，是国外当前新开发的立体喷墙涂料，还是玻壳厂唯一能做彩壳喷砂耐磨料。
Essentials in design and development of instrument and automatization in this set of spray cooling system are introduced...
根据本人的设计经历，简要介绍这套喷雾冷却系统中仪表和自动化方面的设计开发要点。
In theory, the successful development of the spray can be mucosal surface in the body a "protective shield" to prevent viruses;
理论上，成功开发的喷雾，可在人体黏膜表面形成一层“保护罩”，防止病毒入侵；
The paper introduced the pneumatic logic control technology applied to auto spray device in roadway development.
介绍了用气动逻辑控制技术研制的煤矿掘进工作面自动喷雾装置。
This paper briefly summaries the studies on the role of ocean whitecap, sea spray and bubble in sea-air exchange process, and the development of research in the scope abroad.
简要介绍了海洋白浪、水沫、气泡在海—气交换过程中的作用以及国外对此开展的研究工作的概况和进展。
Although it has success development different producibility bolt in last few year, concrete spraying research have not the obvious break through in anchor spray support.
虽然近几年来已成功研制了各种可伸长锚杆，但锚喷支护中混凝土喷层研究仍未有明显突破。
The development prospect of spray deposition has been discussed.
并讨论了它的发展前景。
This paper introduces the new development of micro-structural, mechanical property, coating surface treatment and physical property of Plasma spray coating in recent years at home and abroad.
本文介绍了等离子喷涂涂层的微观结构，力学性能，涂层表面处理及物理性能等国内外最新的研究进展。
This paper introduces the structures, working principles, main features and development trends of various pneumatic high-pressure no-air cold-spray-lacquer road line-marking vehicles.
介绍了上述各种高压无气冷喷漆划线车的结构组成、工作原理、主要特点、应用及发展趋向。
This paper introduces the structures, working principles, main features and development trends of various pneumatic high-pressure no-air cold-spray-lacquer road line-marking vehicles.
介绍了上述各种高压无气冷喷漆划线车的结构组成、工作原理、主要特点、应用及发展趋向。
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