1) air-dried density
气干密度
1.
The objective of this study is to investigate the feasibility of using near infrared spectroscopy(NIR) combined with chemometrics analysis to rapidly predict the air-dried density of Phyllostachys pubescens Mazei ex H.
该文对近红外光谱技术结合化学计量学分析方法快速预测毛竹材气干密度的可行性进行了研究,重点探讨不同采谱方式对所建模型预测精度的影响。
2.
In order to investigate the effect of different parts(North or South) and radial directions(Near pith or near bark) on the mechanical properties and dir-dried density of plantation wood,the mechanical properties and air-dried density of plantation-grown Castanopsis hystrix and Betula alnoides at different parts and radial directions were studied.
为了研究树木南北向与径向位置的变化对人工林木材力学性质与气干密度的影响,该文通过对红锥、西南桦人工林木材南北向、近髓心和近树皮2个不同径向位置的力学性质以及气干密度进行测定,分析了南北向和不同径向位置2个因素对两种木材力学性质和气干密度的影响,以及木材密度与抗弯强度、抗弯弹性模量、顺纹抗压强度的相关性。
3.
Wood anatomy of 12-13 year old Chinese fir plantation in different growth environments (south hillside, mountain valley, ridge, mountain top) was studied by measuring annual ring width, late wood percentage, tracheid length, tracheid width, thickness of cell wall, ratio of length to width, ratio of cell wall to cavity, microfibrillar angle, proportion of wood tissues, air-dried density.
本文采用宏观和微观方法，以木材的年轮宽度及晚材率，管胞形态因子，微纤丝角，组织比量，气干密度为指标，对不同生长环境(南坡，山谷，山脊，山顶)的人工林杉木(12——13年生)的木材解剖特征进行研究，结果表明：(1)不同生长环境全树间的年轮宽度及晚材率均达到了差异显著水平，其大小顺序为，年轮宽度：山谷(7。
2) air-dry density
气干密度
1.
The standing tree’s dynamic MOE, radial MFA, tangential MFA and air-dry density were respectively tested by nondestructive instrument: FAKOPP 2D, x-ray diffractometry and x-ray densitometry.
本文以雷州林业局粗皮桉种子源的6个种源28个家系为研究对象,采用无损检测仪FAKOPP 2D测量活立木纵向动弹性模量,X射线衍射仪分别测量径切面与弦切面微纤丝角,X射线密度仪测量气干密度,进而用数理统计方法对所测材性指标在不同种源、家系间的变异进行了比较分析;同时,结合近红外光谱技术分别建立关于径切面微纤丝角、弦切面微纤丝角和气干密度的分析模型,实现微纤丝角和密度的预测。
2.
The results showed that 1)the air-dry density of treated wood with the soaking time of treated wood was a significant positive correlation.
采用浸渍甲基丙烯酸甲酯(MMA)再经γ射线辐照的方法,研究了不同浸渍时间(8h、24h、48h)对处理材的气干密度和24h吸水率的影响。
3) air dried wood density
木材气干密度
1.
taken from a 9 year old clonal test site were analyzed in order to investigate the genetic variation of wood properties, including air dried wood density and some mechanical properties.
该文利用 9个 9年生三倍体毛白杨无性系木材试样 ,研究了木材气干密度组成及力学性质的遗传变异规律 。
4) dry gas seal
干气密封
1.
Finite Element Simulation of the Gas Flow Field in the Dry Gas Seal Spiral Grooves;
干气密封螺旋槽内气体流场的有限元模拟
2.
Application of the Tandem Type Dry Gas Seals in Light Hydrocarbon Pumps;
串联式干气密封在轻烃泵上的应用
3.
Applications of Dry Gas Seal in Propane Pumps;
干气密封在丙烷泵上的应用
5) gas seals
干气密封
1.
Dynamic pressure calculation of steady-state micro-scale flow field in spiral grooved dry gas seals;
螺旋槽干气密封稳态微尺度流动场的动压计算
2.
A stability analysis for lubricating gaseous film of spiral grooved gas seals subjected to angular eddy motion;
螺旋槽干气密封润滑气膜角向涡动的稳定性分析
6) dry gas sealing
干气密封
1.
It is shown by analysis that the main reasons for the damage of dry gas sealing are the higher vibration of radial tile at both sides and higher temperature of thrust tile.
介绍二氧化碳压缩机高压缸的结构及运行中存在的问题,分析认为干气密封损坏主要原因是两侧径向瓦振值较高、止推瓦温度较高,提出改进措施。
2.
The structural characters and control principle of the floating ring sealing and the double face dry gas sealing are introduced.
对比了浮环密封与双端面干气密封的结构原理和控制原理 ,介绍了双端面干气密封的改造情况、使用效果、存在问题以及操作费用
3.
Presented the structure and principle of floating ring sealing and dry gas sealing for compressor,compared the advantages and disadvantages between them,put forward revamping scheme with dry gas sealing.
介绍压缩机浮环密封与干气密封的结构及工作原理,比较其优缺点,提出干气密封改造方案,改造后达到了预期的目的,指出干气密封在维护操作中应注意的事项。
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