1) sealing screw
密封螺钉
2) density of Oncomelania hupensis
钉螺密度
1.
The result shows that the size of the stand crown cover performs negative correlation with the density of Oncomelania hupensis on the beach land.
林分郁闭度大小是改变林下生态环境的主导因素,通过对林下草本植物分布变化以及林下温度、湿度、光照及地下水位等因子的调查分析研究,结果表明:滩地林分郁闭度大小与钉螺密度呈负相关关系。
3) precision screw
精密螺钉
4) spiral seal
螺旋密封
1.
Optimization of spiral seal applied to mechanical driven shaft in flue gas desulphurization system of dense flow absorber;
密相干塔烟气脱硫除尘系统机械传动轴用螺旋密封的优化
2.
Through an analysis of structural failure of dual-end-face, mechanical seal and soft packing seal parts of centrifugal oil pumps, a suggestion of improving the pump seal structure with spiral seal made of engineering plastic material is proposed and practiced with satisfactory effect.
通过对离心式油泵端面密封和软填料密封的结构失效分析,提出端面密封改进措施,采用工程塑料制 造螺旋密封来改进离心式油泵的密封结构,取得满意的效果。
3.
Comparing former design of seal structure-stuffing seal,the new sealing structure-spiral seal was reslndied and introduced.
对某钢厂烧结工艺过程中产生的废气与熟石灰反应的密相干塔烟气脱硫除尘系统中出现矿粉泄露的现象进行分析,比较了先前的机械传动轴与壳体的密封结构——填料密封,发现此结构存在设计选型上的缺陷,重新研究分析采用新的密封结构——螺旋密封,利用Matlab进行优化,确定出轴与壳体之间最优密封结构尺寸。
5) screw sealing
螺旋密封
1.
This paper briefly introduces the sealing principle of the screw sealing feed water pump, and deals with its frequent trip problem arising from inadequate pressure difference of seal water.
在对螺旋密封式给水泵的密封原理作简要介绍的基础上 ,针对其因密封水压差小而导致频繁跳泵的问题进行了讨论。
6) Screw Seal
螺旋密封
1.
Problems in the construction design of screw seals;
螺旋密封结构设计应注意几个问题
2.
Research And Optimizing of Sealing Capability For Screw Seal;
螺旋密封封液能力的探讨及其优化
3.
In this paper,sealing capability of screw seal for different construction type and different slot shape is discussed theoretically from the viewpoint of engineering application better practicality theoretical formula on sealing capability are proposed.
从工程应用的角度，对不同结构型式和不同槽形的螺旋密封的封液能力进行了理论探讨，并提出了实用性较好的螺旋密封封液能力计算式。
补充资料：非密度制约因素(见密度制约因素)
非密度制约因素(见密度制约因素)
l焦非密度制约因素见生态因素、密度制约后
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条