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

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。

Experimental Investigation on Conical Horn Excited by an Azimuthally Symmetric Mode with Plate Lens

轴对称模激励的加平行板透镜圆锥喇叭实验研究

Mode-Matching Analysis of the Reflection Characteristics for Conical Horn Antennas with Small Flaring Angle

小张角圆锥喇叭天线反射特性的模匹配法分析

Dielectric resonators and a conical horn antenna were calculated by the presented methods.

采用提出的方法计算了介质谐振器和圆锥喇叭天线。

A Multimode Conical Horn of Simple Structure in 4MM Wave Band

一种结构简单的4mm多模圆锥喇叭

Design of dual-mode conical horn feed with equal E and H patterns

E面和H面方向图等化的双模圆锥喇叭设计