PPM是什么意思

网络释义

用法例句

The hybrid magnet was made by combining electromagnet with permanent magnet(PM).

通过比较永久磁铁的不同安装位置的影响,给出混合磁铁的结构方案。

Starting from the two operational states of permanent magnet, this article explains that the working point of permanent magnet in the permanent magnet actuator is sited on the reversional curve, and the demagnetized curve of NFeB permanent magnet is approximately in a straight line,and its reversional curve coincides with the demagnetized curve, moreover,its flux density has repeatability.

从永久磁铁的两种工作状态出发 ,说明了永磁机构中永久磁铁的工作点位于回复线上 ,且钕铁硼永磁的祛磁曲线几乎是一条直线 ,它的回复曲线与祛磁曲线基本重合 ,磁感应强度具有重复性。

In this paper, an IBEM(Indirect Boundary Element Method) is presented for calculating permanent magnet field, and the formula of calculating magnetic field intensity is deduced.

本文提出用间接边界元法计算任意界面的永久磁铁所产生的空间磁场，推导出其磁场计算公式。

Columax permanent magnet

科鲁马克斯永久磁铁

permanent-magnet stepping motor

永久磁铁步级电动机

permanent magnet moving-coil type ammeter

永久磁铁动圈式安培计

permanent magnet moving-coil type voltmeter

永久磁铁动圈式伏特计

The Application of Permanent Magnets on the Easy Open End Line

永久磁铁在易开盖连线生产中的应用

"A current can also be induced by constantly moving a permanent magnet in and out of a coil of wire, or by constantly moving a conductor near a stationary permanent magnet."

让永久磁铁在线圈中进出运动或让一个导体在固定的永久磁铁附近的区域移动,也会产生电流。

Methods to obtain distinct resonant signal with permanent magnet in unclear magnetic resonance;

永久磁铁核磁共振实验仪如何获得清晰的共振信号

an alloy used to make high-energy permanent magnets; contains aluminum and iron and nickel plus cobalt or copper or titanium.

一种用于制高能量永久磁铁的合金，含铝、铁、镍以及钴或铜或钛。

However, if a permanent magnet is put near the bottom of cup, it will produce a heterogeneous magnetic field and act on the aluminum ball to produce a magnetic buoyant force.

但当下方永久磁铁靠近杯底时，在磁液中产生非均匀磁场，对铝球作用一磁性浮力。

ultrapowerful Nd-Fe-B permanent magnetic alloy

超强钕铁硼永磁合金

Iron-cobalt-vanadium permanent-magnet alloys

GB/T14989-1994铁钴钒永磁合金

Research on application of permanent magnet loop in magnetic force grinding;

在磁力研磨中采用永磁铁磁路的研究

Pig iron used as permanent ballast.

压载铁做为永久性压舱物的生铁

Of or relating to a crystalline dielectric that can be given a permanent electric polarization by application of an electric field.

铁电体的一种可通过电场的作用获得永久电磁性的透明的绝缘体的或与此有关的

the process that makes a substance magnetic (temporarily or permanently).

使物质暂时或永久具有磁性的过程。

a rigid magnetic disk mounted permanently in a drive unit.

永久地安装在驱动程序中的硬磁盘。

Structure and Features of Permanent Magnet Circuits for Orienting Compression of Rare Earth Magnets

稀土磁体取向压制成型永久磁路的结构与特点

The area ( s ) on magnetic disks used for work in process ; not permanent or even semipermanent.

用来进行工作的磁盘域,它不是永久性的甚至不是半永久的。