2) safe density
安全密度
1.
While under the condition of high temperature and high pressure,the safe drilling in thin safe density window is the technical difficulty that can not be solved well around the world.
随着深部油气藏的勘探和开发,深井及超深井的数量大幅度增加,而深井超深井在高温高压条件下,窄安全密度窗口内的安全钻井是当前国内外都未能很好地解决的重大技术难题。
3) total density of states
全态密度
1.
The distribution of local density of states(LDOS) in quasiperiodic photonic crystal(QPC) and the total density of states(DOS) are studied.
本文研究了准晶光子晶体的局域态密度和全态密度。
4) global density
全局密度
1.
Based on random sets theory,false alarms and miss-detections in the background were considered,then,belief measure and its global density of targets were presented.
基于随机集理论,根据虚警及漏测的情况,给出了目标的信任测度及其全局密度。
5) full density materials
全密度材料
6) safety density window
安全密度窗口
1.
Because carbonate rock in Carboniferous system which was main reservoirs develop many cracks that caused not only mud loss but also well kick,and had narrow safety density window of drilling fluid,first lost circulation then well blowout is easily to happened,so drilling fluid rheological property became as the important factor of affecting pressure balance in well.
94,裂缝发育,漏喷同层,钻井液安全密度窗口窄,极易出现先漏后喷的复杂局面,钻井液流变性成为影响井下压力平衡的重要因素。
补充资料：全密度材料
分子式：
CAS号：
性质：又称全致密材料。无残留孔隙或相对密度不小于98%的粉末冶金制品或材料。通常使用热成型技术（如粉末锻造、热等静压、热挤压、电火花烧结等），可将粉末冶金材料中的残留孔隙降低到2%以下。另外液相烧结、熔渗技术（如钨渗铜，硬质合金等）的密度接近全密度值。粉末冶金法与熔炼法制得的全密度材料相比，粉末法成分更均匀，可少切削，少加工，材料利用率大大提高。
CAS号：
性质：又称全致密材料。无残留孔隙或相对密度不小于98%的粉末冶金制品或材料。通常使用热成型技术（如粉末锻造、热等静压、热挤压、电火花烧结等），可将粉末冶金材料中的残留孔隙降低到2%以下。另外液相烧结、熔渗技术（如钨渗铜，硬质合金等）的密度接近全密度值。粉末冶金法与熔炼法制得的全密度材料相比，粉末法成分更均匀，可少切削，少加工，材料利用率大大提高。
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