BISAC levels of specificity complement Library of Congress Subject Headings, allowing patrons to drill down into a topic in an intuitive system of guided navigation.
BISAC的等级补充了国会图书馆的主题词，让读者能够在带有导航功能的系统中进入某一个具体的主题。
This approach is also difficult to maintain as the system changes and is hard to drill into.
当系统变化时，这种方式既难维护，也很难深入进去。
You can double-click any of the key performance indicators from the performance Expert System Overview window or dashboard to drill down into more key performance indicators.
您可以双击performanceExpertSystemOverview窗口或指示板上的任何关键性能指标，以下钻到更多的关键性能指标。
Query drill down allows you to gather statistical information about each SQL statement executed on the system and analyze statement history.
可以通过查询钻取特性收集关于系统上执行的每个sql语句的统计信息并分析语句历史。
In theory, the Army could use such a system to approach targets covertly and drill through concrete, steel, wood, or other materials from a stand-off distance equal to the length of a football field.
理论上，美国陆军将利用该系统实现某些目标，既通过远距离(超过一个足球场的距离)的设备对混凝土、钢铁、木头以及其他材料进行隐蔽的击穿作业。
I know it is not a practice, and I understand why you so emphatically repudiate any kind of practice, drill, system, discipline or routine.
我知道这不是一种练习，而且我也明白你为什么如此强调否定任何形式的练习、训练、体系、戒律以及例行程序。
On Wednesday, 20 countries participated in a major Indian Ocean-wide tsunami drill aimed at testing a new tsunami warning system.
本星期三，20个国家参与了一项涵盖印度洋海啸演习，宗旨在测验一项新的海啸预警系统。
UNESCO officials say a complete evaluation of the drill will take weeks. If successful, the Indian Ocean Tsunami Warning System will soon take over primary responsibility for the region.
联合国教科文组织官员说，全部演习过程，将需要几个星期的时间。如果演习成功，印度洋海啸预警系统将立即取代原来的预警装置。
There are few systematical formulas to calculate the roller number and the distances between rollers in crawler travel system of rotary pile drill.
旋挖钻机履带式行走装置支重轮之间的距离及其数量的多少，尚缺少系统的计算公式。
A hydrocyclone device that removes large drill solids from the whole mud system.
一种从整个泥浆系统中除去大钻屑的水力旋流装置。
A computer controlled system of drill stems is introduced in this article.
文章介绍了一个钻杆对焊计算机控制系统。
The BHA transmits its torsional vibration to the gear system of drill power pack and brings about nonlinear vibration.
钻柱将其扭转振动传至钻机动力头，引起动力头齿轮传动系统的非线性振动。
By sampling the drill cuttings and using a microcomputer at the well site, the rock drillability can be determined by the energy law measure system.
能量法岩石可钻性测定系统是通过采集钻井井口岩屑并利用微机来测定岩石的可钻性。
The article introduces the electrical control of Z3040 radial drill with PLC and explains the hardware and software design of the system.
文章介绍了用PLC对Z 3040摇臂钻床实行电气控制的方法，并对该系统的硬件组成和软件设计作了阐述。
The design of non-dig drill pipe end-upsetting product line autocontrol system were introduced in this paper.
介绍了非开挖钻杆管端加厚生产线自动控制系统的设计。
Also introduced the series programmable controller carries on the Z3040 radial drill drilling machine electrical system technological transformations the method.
还介绍了系列可编程控制器进行Z 3040型摇臂钻床电气系统技术改造的方法。
The strict management system of company and the drill mechanism ahead of time certainly ensure to provide high-quality products, more perfect management system and service to each cooperator.
公司严格的管理体系与超前的训练机制，确保为每位合作者提供更优质的产品，更完善的管理体系与服务。
The guide rule and general plan to design a laboratorial test stand for drill pump valves are expounded, and the regulation and calculation of the system pressure of the stand are discussed.
系统地阐述了钻井泵泵阀试验台的设计指导思想和设计方案的确定依据，并介绍了试验台系统压力的调节方法和计算公式。
It also presents the control strategy and deducing machine of drill machine's scheme design expert system.
通过研究钻机方案设计过程，首次提出了钻机方案设计专家系统的控制策略和推理机制。
This paper introduces the functions, features, structural patterns and key techniques of the CAD system for the short hole drill.
介绍了可转位浅孔钻CAD系统的功能、特点、结构图以及关键技术。
In this paper, the controlling system to improve ordinary vertical drill to automatic drilling machine based on PLC is introduced, and the automatic drill is suitable for batch production.
本文给出了用可编程控制器(PLC)将普通立式钻床改造成可批量加工的专用自动钻床的控制方法。
Therefore, a drill string heave compensation system is needed to compensate the heave motion.
因此，需要采用升沉补偿系统对钻柱升沉运动进行补偿。
Seeding monitoring system is an important component of present precision drill and its function directly affects the quality of precision seeding.
精密播种机的监测系统是现代精播机的一个重要组成部分，其性能的好坏将影响精密播种质量。
The fundamental principle hardware configuration and software design of a microcomputerbased automatic control system for winch type impact drill rig is described.
本文介绍了卷扬式冲击钻机微机自动控制系统的基本原理、硬件的组成和软件的设计。
This paper is to study mechanical processing Z3040 radial drill in common use in the traditional electric control system transformation problem.
本论文是研究机械加工中常用的Z3040摇臂钻床传统电气控制系统的改造问题。
To introduce the structure characteristics of digital control slot-drill, relate the allocation of digital control system and the thinking and method of its reliability design.
介绍了自行开发和研制的数控针床铣槽机结构特点，叙述了数控系统的选配，软件设计及可靠性设计的思想和方法。
According to the requirement of the modern policemen target training, this paper describes a kind of intelligent target practice system for the policemen shooting drill.
根据现代警察射击增训的需要，设计了一种智能化的警察射击训练使用的打靶机系统。
The wireline retrievable drill lock assembly is the heart of the casing drilling system.
带电缆可回收的钻井锁组合是套管钻井的核心部分。
The wireline retrievable drill lock assembly is the heart of the casing drilling system.
带电缆可回收的钻井锁组合是套管钻井的核心部分。
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