查询词典 filament

In ancient times, when vacuum tubes were still in use, the A battery (often about 6 volts) heated the filament or cathode to boil off electrons, the B battery, positive with respect to the cathode, sucked the negative electrons to the plate, while the C battery, a few volts negative with respect to the cathode, tended to repel the electrons back toward the cathode.

古时候，还在使用真空管时，A电池（通常为6V）通过加热灯丝或阴极来蒸发电子，B电池，正极连接阴极，将负电子吸引到极板上，而C电池，只有几伏，负极连接阴极，将电子击回阴极。

He spent nearly three days time to put into a vacuum glass bulb filament, pass on the power to issue the equivalent of 10 gas lamps of the gentle light, which lasted about 45 hours.

他花了近3天时间把灯丝装进真空玻璃泡，通上电源，发出相当于10盏煤气灯的温柔光芒，它延续了约45个小时。

In this paper we review the development and application of such crystals and design a two-pass Ce:LiCAF amplifier pumped from both sides for the laser filament.

本文回顾了这两种晶体的研究现状以及它的应用，设计了一种拟用于紫外激光成丝研究的Ce：LiCAF激光放大器。

Melting point 3410 ℃, boiling point 560 ℃, relative density of 1935, F the external electronic structure of 5d46s2, in the chemical reaction time is very easy to lose 1-6 electronic, but also can get 1-2 electronic, so oxidation number of 0,± 1,± 2, 3, 4 , 5 and 6, with 6 price of the most stable compounds, such as WO3 does not dissolve in water, the air will form in the tungsten trioxide thin protective layer of tungsten, tungsten with fluorine at room temperature, chemical combination, red hot when there is no moisture and Bromine iodide together, red hot when you can and water reaction WO3, at room temperature reaction of tungsten with aqua regia, but the hot concentrated hydrochloric acid and sulfuric acid can only be played with its weak response, but molten nitrate, nitrite, too Hydrogen peroxide, sulfur steam, steam and other phosphorus can play intense reaction, high temperature can not be carbon, boron and silicon reaction of binary compounds, widely used in industrial tungsten steel and tungsten carbide, pure tungsten filament is used to the system, and X-ray tube Tube heating components, semiconductor components can be prepared tungsten silicide, tungsten industrial production is white or black tungsten ore tungsten ore refining.

熔点3410℃，沸点560℃，相对密度1935，F外围电子结构为5d46s2，在化学反应时很容易丢掉1—6个电子，也能得到1—2个电子，所以氧化数为0、±1、±2、＋3、＋4、＋5和＋6，以＋6价化合物最稳定，如WO3不溶于水，空气中的钨会形成薄层三氧化钨保护层，钨能与氟在室温下化合，红热并无潮气时能与溴、碘化合，红热时还能和水反应生成WO3，室温下钨可与王水反应，但热的浓盐酸和硫酸只能与其起微弱反应，但对熔融的硝酸盐、亚硝酸盐、过氧化氢、硫蒸汽、磷蒸汽等能起激烈反应，高温下不能与碳、硼和硅反应生成二元化合物，工业上广泛使用钨钢和碳化钨，纯钨用来制灯丝、电子管和X射线管的发热元件，硅化钨可制半导体元件，钨工业生产是将白钨矿石或黑钨矿石精炼。

Accordingly, the transition metal dopant may form a filament in the resistive layer that operates as a current path.

因此，过渡金属掺杂物可以在电阻层中形成用作电流通路的丝。

A new kind of fix-axis numerical control filament winding machine is developed, which has double-layer winding function. The machine consists of spindle, carriage, tension control, and control system.

研制了一种可实现双层缠绕功能的新型五轴联动数控缠绕机，包括收线系统、放线系统、张力器和控制系统4个部分。

The examinations of diapason vibration sensation of foot, sensation point of 10g Nylon Filament, Achilles tendon reflex are simple, practical, and should be widely used.

周围神经病变中尼龙丝感觉点、足部音叉振动觉和肌腱反射的检查最为简单实用。

The core-spun yarn made with this fiber and glass filament on Jet spinning machine is of good fire resistance.

腑氯纶是一种具有阻燃作用的改性腈纶纤维，利用腈氯纶和玻璃纤维长丝生产的喷气纺包芯纱具有良好的阻燃效果。

In this article, the design requirements of continuous spinning machine for viscose filament are discussed, the main types of spinning, treatment and winding components are introduced, and their constitutional characteristics are compared and analysed.

论述了粘胶长丝连续式纺丝机必须满足的设计要求，介绍了纺丝、后处理和卷绕等部件的基本型式，并对它们的结构特点进行了对比分析，为我国自行研制拥有自主知识产权的连续式纺丝机提供了理论基础。

Filament with 15 to 30 day single-wire, mesh hole smooth surface, there is in favor of filtering.

长丝用15～30旦单丝，筛网孔眼表面光滑，有利于过滤。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。