1) Aging of drilling equipment
钻机老化
2) bit ageing
钻头老化
3) aging mechanism
老化机理
1.
Combined with the mechanical data,the aging rule and aging mechanisms for PMMA in tap water were clarified qualitatively.
研究是在自来水(50℃温度)条件下对有机玻璃做了70 d(天)左右的人工加速老化试验,然后对不同老化时间的有机玻璃试样进行了宏观力学性能测试,并进一步利用凝胶渗透色谱法(GPC)、示差扫描量热法(DSC)等手段,分析了老化前后有机玻璃试样的结构和组成差异,结合老化前后有机玻璃力学性能的变化,揭示了有机玻璃在自来水条件下的老化规律和老化机理。
2.
Some aging mechanism of polymer materials are discussed as well as several kinds of ways of aging testing for polymer materials.
主要综述了高分子材料老化机理及目前国内外各种高分子材料老化试验研究方法。
3.
The aging mechanism for motor control center(MCC) of nuclear plant was analysed.
分析了核电站电动机控制中心(MCC)的老化机理。
4) ageing mechanism
老化机理
1.
Finally,the ageing mechanisms of silicone rubber foam materials were deduced from some analyses,not only the molecule chain structure changes of silicone rubber during thermal-oxydative process,but also the cellular.
从理论上分析了硅橡胶主链结构在热氧老化过程中的变化,并结合硅橡胶泡沫材料的微观泡孔结构变化,提出了硅橡胶泡沫材料的热氧老化机理。
2.
Combining the difference of internal frication (IF) character and microstructure before and after ageing, the ageing mechanism was discussed, and some suggestions about processing technology and application of this material were put forward.
结合老化前、后材料内耗性能和微观组织的变化,对此类材料的老化机理进行了讨论,并就材料的加工工艺和应用提出一些建议。
3.
The ageing mechanism of ceramic humidity-sensitive elements is investigated.
对陶瓷湿敏元件的老化机理作了分析,认为湿敏陶瓷都是由金属氧化物晶体构成,这些金属氧化物具有明显的离子性,易吸附有极性的媒质,除了能吸附水分子外,也能吸附有极性的污染物,形成憎水性表面,造成元件暂时性老化。
5) aging mechanisms
老化机理
1.
By guessing methodology, the aging mechanisms of petroleum asphalt protection layer in long-distance pipelines were analyzed and some phenomenon in the aging process were explained, which provided a good approach for studying the aging process of petroleum asphalt layer of long-distance pipelines.
以猜想方式描述分析了埋地长输管道石油沥青防护层的老化机理,解释了石油沥青防护层老化过程中实际存在的一些现象,为研究探讨长输管道石油沥青防护层老化过程提供了思路。
6) QUV aging machine
QUV老化机
补充资料：KQX-120型潜孔旋转两用钻机
KQX-120型潜孔旋转两用钻机
KQX一120型 潜孔旋转两用钻机巍
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