Based on analyzing the cause of balling up, through improving the performance of drilling fluid, and changing drilling parameters, the paper put forward the technical measures of prevention PDC bit balling. They help to solve the problem of PDC bit balling.

The secondary particle sphere of xonotlite yielded by konilite is of hollow structure, however, for the carbon white fibrous crystal just stacked densely and balling up is poor.

由粉石英制备的硬硅钙石二次粒子球具有中空结构，而白炭黑对应样品则以纤维聚集成的块体为主，成球差。

Aimed at resolve the several problems which affect drilling efficiency, such as balling up and calcareous cementation, the design of blade bits was modified.

针对钻头包泥堵钻和钙质胶结层难以进尺等影响钻进效率的几个问题，对刮刀钻头结构进行了改进设计，并取得了令人满意的效果。

Analysis on balling up caused by helicoid hydraulic motor bypass valve failure in combined drilling technology EXPERIMENTAL STUDY OF ABRASIVE-CORROSIVE WEAR OF MUD PUMP LINER

复合钻井过程中螺杆钻具旁通阀刺漏造成钻头泥包分析钻井泵缸套材料磨料&腐蚀磨损实验研究

Research suggests that balling up the right hand and squeezing it tightly actually makes it easier to memorise lists.

研究显示，实际上，攥起右拳并握紧能让你更容易地记住列表内容。

Application of PLC at balling drum

可编程逻辑控制器在圆筒造球机上的应用

Disc balling machine is kind of major equipment in pellet production.

圆盘造球机是造球的重要设备之一。

In this paper, a new model based on a track on the solid ballast for analyzing the longitudinal temperature stress distribution of welded continuous track is presented.

以整体道床上的新型轨道为基础，提出了一种用于计算此类轨道纵向温度力分布的新模型&轨道爬行。

Study on the Distribution of Longitudinal Temperature Stress along Welded Continuous Rail on the Solid Ballast

整体道床无缝轨道纵向温度力分布规律研究

In order to ensure ship safety, we must know the ship ′ s ballast tank pressure loss.

为了确保更换压载水时船舶的安全，设计船舶时必须对船舶压载舱压力损失进行计算。

Liquefied Natural Gas Tanker's Ballast Tank Painting Technology

液化天然气船压载舱涂装工艺

Research on computing method of shell strength of submarine ballast tank with longitudinal solid floor

潜艇纵骨式全实肋板耐压液舱壳板强度计算方法研究

Computation of the Ballast Tank Hydraulic Loss Based on Resistance Network

用电阻网络方法计算船舶压载舱的压力损失

This paper discusses the founding of mathematical model of centrifugal probability ballast cleaner, and combining with the model, introduces the mixed discrete optimal design method, and hence offers a practical reliable optimal method for centrifugal probability ballast cleaner.

本文详细介绍了离心概率筛优化数学模型的建立，结合数学模型引进了离散变量优化设计方法（MD-OD），为离心概率筛的设计提供了一种切实可行的优化设计程序。

The Optimal Design of Cleaning Screen of the Hydraulic Ballast Cleaner

全液压枕底清筛机筛分机构的优化设计

Valve remote control system can control the hydromantic driving unit, valves, gather data from cursors. It can also control cargo pump and ballast pump.

阀门遥控系统采集阀门以及传感器数据，控制液压动力单元、液压阀门，对液货泵及压载泵等进行控制。

Ballast pump status-indicating system

压载泵状态指示系统

In this paper, method of calculation for pumping of water vapour with gas ballast pump is introduced.

本文介绍用气镇泵抽除水蒸汽的计算方法。

In the paper, model of ballast pump is established according to the principle of centrifugal pump.

本文根据离心泵的原理建立了压载泵流量模型；

Calculation of Parameters for Gas Ballast Pump

气镇泵的参数计算

Cargo and ballast pump speed control system

货油及压载泵转速控制系统