查询词典 alluvial cone

In Gravitarmata margarotana oviposition selection period, the total contents of volatiles in healthy needle branches were higher than healthy cone branches, and the total contents of volatiles in red cone tree were lower than green cone tree.

在油松球果小卷蛾危害期，虫害果枝中挥发物的含量均高于健康果枝，油松健康果枝挥发物的含量在化学诱导后明显增加，化学诱导与植食性昆虫取食对油松产生了相似的诱导反应。

The transducer assembly (102) includes an inner driver cone (114), an outer driver cone (112) and a dust cap (116) constructed such that the direct path length from the voice coil (110) to the outer driver cone periphery is substantially equal to the distance from the voice coil to the dust cap peak.

换能器组件(102)包括一个内部激励器锥(114)、一个外部激励器锥(112)和一个防尘帽(116)，于是从音圈(110)到外部激励器锥周边的引导路径距离基本等于从音圈(110)到防尘帽顶部的距离。

In fishing,the sliding cone blocks enter the fish cavity easily acted by a guide shoe and a guide cone,slide downward by its own weight,produce relative displacement to the guide rail slope,and the radial distance between its tooth face and the spear rod increases until it touches the inner wall of the fish cavity; while lifting the drilling string,the guide rail slope on the spear rod forces the sliding cone blocks to bite the inner wall of the tubing fished.

打捞时在引鞋和导锥的作用下滑牙块能够顺利进入鱼腔并依靠自重下滑，沿导轨外伸直至其齿面与鱼腔内壁接触；随后上提钻柱，矛杆上的导轨斜面迫使滑牙块咬紧被打捞油管内壁，当油管严重偏磨使一对滑牙块卡在磨穿位置时，另一对能有效卡在未磨损部位，同时外筒限制了油管外胀变形。

An exstensive research on the calculation formulas for the abutment cone slope on skewed bridges is conclucted.Calculation formulas of key parameters on slope curve are derived through analytic calculation of ellipse curve at slope bottom.The values of parameters are discussed and various forms of cone slope and curve at slope bottom are detailed.

以斜交桥梁桥台锥坡为锥坡的一般形式展开较深入的研究，通过对坡脚椭圆曲线的解析计算，推导得出坡脚曲线各控制参数的计算公式，并对其取值进行讨论，详细说明了锥坡和坡脚曲线的各种形式；进而推导了斜交锥坡的体积、护坡体积、表面积和基础体积的计算公式。

Correlation of drillability anisotropy index of the roller cone bit and PDC bit, the difference between drillability of the roller cone bit in perpendicular and horizontal directions of the bedding plane with the P-wave velocity anisotropy coefficient are studied respectively by means of mathematical statistics. A mathematical model is established for predicting drillability anisotropy index by using P-wave velocity anisotropy coefficient.

用数理统计方法研究分析了牙轮钻头岩石可钻性各向异性指数、牙轮钻头垂直于和平行于地层层面方向岩石可钻性差值和PDC钻头岩石可钻性各向异性指数与纵波波速各向异性系数的相关关系，建立了用纵波波速各向异性系数评价地层可钻性各向异性的模型。

Collier Cone, a cinder cone, at the north base of North Sister.

科利尔圆堆，一个煤渣堆，在三姐妹山北峰的北侧山脚。

This paper introduces a new method of turning circular cone to improve the precision of finished cone, and cutting down the time of adjusting angle.

介绍了一种新的车削圆锥体的方法，该方法使加工出的锥体精度提高，并可缩短角度调校时间。

A plane curve formed by the intersection of a right circular cone and a plane parallel to an element of the cone .

一个平面与正圆锥体的底部相交而形成的不闭合的曲线。

A plane curve formed by the intersection of a right circular cone and a plane parallel to an element of the cone.

具有抛物面主镜和双曲面次镜的一种折射式望远镜；光线被集中到主镜中心的孔径。

A right circular cone is circumscribed to a sphere of radius 3 cm, with the base of the cone touching the sphere.

一半径为 3 cm 的球体内接於一正圆锥体。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。