根状茎粗短，直立，高可达1米，顶端密被棕褐色、光泽的钻形鳞片。
Stock stout forming an erect trunk sometimes up to1m tall apex densely covered with subulate shining brown scales.
根状茎粗短，直立，高可达1米，顶端密被棕褐色、具光泽的钻形鳞片。
Stock stout, forming an erect trunk sometimes up to 1 m tall, apex densely covered with subulate shining brown scales.
玉琮的抛光工艺上，磨垅光洁而不留据、钻、凿、磋的痕迹，使得器形浑圆规整。
Tsung-yu of the polishing process, the mill rather than to stay bright and clean, according to Long, drilling, cutting, traces of polish, making regular rounded shape.
经现场检验，分形法确定岩石可钻性级值具有较高的精度。
Practically it proves that the fractal method has higher precision to ascertain rock drillability grade.
横向截形是麻花钻螺旋面容屑槽的一个特征参数。
Drill cross section profile (DCSP) is a characteristic parameter of drill helix flute form.
本文从研究可钻性时间序列特征出发，应用分形几何方法，分析了可钻性时序的可预测性。
In this paper the predictability of drillability time series was analyzed using fractal method based on the study of drillability time series characters.
将分形理论用于解释岩石可钻性能量测试方法中岩屑试样的破碎机理。
The fractal theory is applied to interpret the fracturing mechanism of rock debris which is analysed by the drillability energy test methods.
麻花钻切屑槽的螺旋形布局对钻头的刚度和强度有很大的影响。
The spiral composition of the chip flute of the twist drill has great influence on the rigidity and intensity of drill.
通过研究得出了一套研究钻柱系统动力学模型及求解方法，对新形钻柱的设计和钻井力学的研究具有指导意义。
The dynamic model reveals the dynamic action of string, it is instructive to design new rock bit and study drilling mechanics.
一颗重达75.36克拉的巨钻找到了新主人，并得到了新名字。据佳士得拍卖行所称，这颗钻石是有史以来上拍的最大、最完美的水滴形钻石。
The new owner of what Christie's auction house called the largest and most perfect briolette diamond ever sold at auction has identified herself and picked a name for the 75.36-carat gem.
对石油钻井过程中岩石破碎的分形机理及形成过程进行了研究，提出了一种以井底返出的岩屑为对象测试岩石可钻性的新方法。
This method takes the detritus returned from bottom hole as the studying object. The fractal mechanism and forming process of broken rock during drilling were studied.
本文利用螺旋面理论。结合计算几何知识，根据-麻花钻实物求出了加工该工件用的二次圆盘刀具截形。
On the basis of helicoid theory and computational geometry, the sectional contours of a sample twist drill were found for producing similar twis1t drills.
本文利用螺旋面理论。结合计算几何知识，根据-麻花钻实物求出了加工该工件用的二次圆盘刀具截形。
On the basis of helicoid theory and computational geometry, the sectional contours of a sample twist drill were found for producing similar twis1t drills.
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