According to a sequence of coning angle, the curve of transmission efficiency versus coning angle is given.

The error analysis in the measurment of a coning angle with a sine bar

用正弦规测量圆锥角实验的误差分析

This lot quality samples were prepared well mixed, and reduced by coning and quartering.

样品被准备得好混合的这一个运气质量，而且藉由精读而且四等分减少。

The three phase model of oil gas and water coning

油气水三相锥进模型

Aim at the problem of gas coning and oil coming into gas cap, water flooding barrier on GOC is used to solve to them.

针对油气界面变化带来的气窜和油侵气顶的问题，常用在油气界面处注水障的方法来解决。

Meanwhile, horizontal well can effectively control bottom water coning and gas coning, postpone water breakthrough time.

水平井可有效地控制底水锥进和气锥进，延缓见水时间；水平井单井控制面积是直井的2～3倍，而钻井费用只是直井的15～2倍。

Tersely illustrates the forming mechanism of gas cutting and gas coning with their reasonable gas flooding technology, measures of preventing impurities in water and CO 2 causing the damage of reservoir;

简要介绍了气侵、气锥形成机理和合理的注气工艺及预防注入水和CO2气体中杂质带来的油层伤害措施；

Effects of Water and Heat Stress on the Needle Sugar Content of Four Coniferous Tree Seedlings

水分和热胁迫对苗木针叶可溶性糖含量的影响

Preliminary study on Cuttage of four coniferous tree species introduced from abroad

4个国外引进树种扦插试验初报

A study on Application of Photo-micro Fertilizer In Coniferous Tree Seeding

光肥在针叶树育苗中的应用研究

Study on Fire Resistance of Bark of 3 Coniferous Tree Species

3种针叶树种树皮抗火性研究

Family of confocal centred conics According to the restriction of the generatrix line, Bertrand surface can be constructed with the Bertrand curve with broad sense group.

共焦有心二次曲线族按照母线的约束，形成广义白川德曲线族，进而构造出白川德曲面。

Conical shaft extension for rotating electrical machines conical drum reversing concrete mixer

GB/T757-1993旋转电机圆锥形轴伸锥形反转出料混凝土搅拌机

Conical drum reversing concrete mixer

锥形反转出料混凝土搅拌机

The check valve of the single piston pump was replaced by ball valve, and conical valve with guidance was used for safety valve;

单柱塞油泵的单向阀改成球阀，安全阀改用带导向的锥阀；

Axial Force of Conical Valve

圆锥阀的轴向力

On Waveguide Band-Pass Filter Axial Force of Conical Valve

波导带通滤波器圆锥阀的轴向力

Through examples in practice, the paper presents the fault diagnosis and treatment of conical valve system.

以实例说明了锥阀系统故障的诊断与处理方法。

Fault diagnosis and treatment of integrated conical valve hydraulic system

锥阀集成液压系统的故障诊断与处理

A New Model and Simulation of the Movement of Self-acting Conical Valve of Reciprocating Pumps

往复泵自动锥形阀运动规律的新模型与仿真

It also approach theoretically to change the conical valve gag into globe valve gag to raise the stability of the seal plate.

并在理论上探讨将锥形阀瓣改为球形阀瓣，提高密封面的稳定性。