脉管

We use integrated chip TL494 are the master control chips, by the MOSFET tube constitution inversion electric circuit, has realized the contravariant system's pulse-duration modulation.

我们采用集成芯片TL494为主控芯片，以MOSFET管构成逆变电路，实现了逆变系统的脉宽调制。

The main circuit adopts the threephase bipolarity contravariant bridge circuit composed of power bipolar-transistor.

其逆变器依据正弦波脉宽调制技术，主电路采用三相双极性逆变桥式电路，逆变管采用电力场效应晶体管。

Based on the original production process, the developed corrosion inhibitor used for polyurethane foaming changes the pH of dialyzate, which is produced from submerging polyurethane foam to water, from acidity into faint alkalinity, so as to inhibit or retard corrosion of the pipeline.

研制成的聚氨酯泡沫用缓蚀剂，在不改变原有生产工艺及发泡参数的基础上，将聚氨酯泡沫浸水析出液的pH值由酸性改变为弱碱性，从而达到抑制或延缓泡夹管腐蚀的目的；采用喷涂聚脉补口技术，有效地提高了现场补口的质量。

Floral tube elongate, cylindric , 6-12-angled or -veined; sepals 6, generally short; epicalyx present, sometimes longer than sepals.

花被管拉长，圆筒状，6-12角的或6-12 -脉；萼片6，通常是短；副萼宿存，有时长于萼片。

A backscatter fiber is used to expand the width of laser pulse. A locking filter is added to dual F-P etalon. Photo Multiplier Tube is used to detect the intensity of light and a frequency tracking circuitry is designed.

使用散射光纤对激光脉宽进行扩展，在双通道标准具的基础上增加专用于频率跟踪的通道，使用光电倍增管检测光强，设计制作了基于采样的频率跟踪电路。

Calyx tubular to narrowly funnel-shaped or narrowly campanulate, usually not inflated, 10-veined, with 5 teeth.

花萼管状到狭漏斗状或狭钟状，通常不膨大，脉，具5齿的。

Then, the relationship between the heat transfer characteristics and the flow patterns was investigated.

在此基础上，深入研究脉动热管的换热特性及其与流型的关系。

A position in the Yangtze Delta links each heart bit of the market for Heavy Tube Enterprise

一个长三角区位，联结了每点重管企业的市场脉动。

The kimberlite has the intensive magnetism, low resistivity, and high content of Cr、Ni and Nb. Its geophysical and geochemical prospecting anomaly over the earth's surface are mostly shaped in ellipse and ribbon, which is paragenetic with fracture structure.

金伯利岩的分布严格受断裂构造控制，矿体呈管状、脉状，具有成群、结带分布的特征；它具有磁性强、电阻率低、微量元素Cr、Ni 、Nb含量高的特征。

Results All cases could display an enhanced mass as local filling defect at the site of the duodenal Vater′s ampulla during arterial and portal phase scanning, the tumors ranged in size from 1 cm to 5 cm with mean of 2.3 cm, all were accompanied with dilated intrahepatic and common bile duct, enlarged gallbladder and dilated pancreatic duct, except one case which had marked atrophy of the pancreatic body and tail.

结果螺旋CT动脉和门脉期增强扫描，15例均清晰显示十二指肠乳头部局限性强化的充盈缺损块影，肿瘤瘤径为1～5 cm，平均2.3 cm。所有病例均可见肝内胆管扩张、胆囊增大、胆总管扩张和胰腺管的扩张，仅有1例伴胰体尾部的明显萎缩。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。