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1.If scientific discovery has not been an unalloyed blessing，if it has conferred on mankind the power not only to create but also to annihilate，it has at the same time provided humanity with a supreme challenge and a supreme testing.
如果科学发现不是纯粹的喜事，如果它赋予了人类不仅是创造还有毁灭的力量，它同时就向人性提出了最大的挑战和最大的考验。收藏指正
2.This paper present a challenge about large system testing guideline standard suggested by BCTV agency of JiangSu province and based on the system guideline adding rule established by GB/T14236-93, analysizing and reassembling the system guideline whichis combined by four section designing the technical guideline of each section of broadcast control centre.
就江苏省广播电视厅提出的大系统指标测试标准提出了质疑，并以 GBH14236－93确认的系统指标相加法则为依据对扬州台四个环节构成的大系统指标进行了分解和重组，设计了播控中心各环节的技术指标。收藏指正
3.Testing short takeoffs and vertical landings is always a challenge.
短距起飞/垂直降落飞机的试飞一直以来就是一个挑战。收藏指正
4.Especially,some international practical testing models such as IELTS,ESOL are being continually introduced into our country. And it really faces a big challenge
特别是IELTS; ESOL等国际实用性测试模式不断引入我国 ,它的确面临着改进和完善的挑战。收藏指正
5.As the development of microwave technology and the universal use of VLSI (Very Large Scale Integration) and ULSI (Ultra Large Scale Integration), traditional automatic testing technology for PCB (Printed Circuit Board) is faced with a rigorous challenge.
随着微波、毫米波技术的发展以及超大规模集成电路(VLSI)、极大规模集成电路(ULSI)的相继诞生和广泛应用,传统的电路板自动测试技术受到了前所未有的挑战。收藏指正
6.With the wireless industry pushing towards higher levels of integration,employing more sys-tem-in-a-pack age(SIP)and multi-chip modules(MCM),known-good-die testing of RF-SOC devices has emerged as an im portant test challenge.
随着无线通讯产业推动芯片集成度的不断提高,系统级封装(SIP)和多芯片组件(MCM)被更多采用,射频系统级芯片(RF-SOC)器件的良品测试已成为一大挑战。收藏指正
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