Fewer workers are needed to solder circuit boards.焊接电路板需要的工人更少了。Joints between reinforcement members can be made satisfactorily with tin solder.锡焊能够满意地做成加筋构件之间的接头.A number of metals and alloys, how ever , are difficult t...
Joints between reinforcement members can be made satisfactorily with tin solder.锡焊能够满意地做成加筋构件之间的接头.Single plated nickel barrier terminations has excellent solder heat resistance for soldering.外部电极为镍的电镀构造,于焊接时具有极优越的耐热性.Fe...
The deep crevasse yawned at their feet.他们脚下的冰川有一道深深的裂缝.He yawned heavily.他打了个大呵欠。The gulf between them yawned wider than ever...他们之间的隔阂比以往任何时候都要深。He yawned and curled his body down farther beneath the poncho.他打了个呵欠,把身子再蜷...
你如果把信封倒过来, 钥匙就会掉出.If you turn the envelope upside down, the key will fall out.她试了一下, 秘密的夹底果然开了, 里边掉出4封信.She tried it, the secret compartment opened, and out fell four notes.火炉里掉出一块炽热的煤把地毯烧了.A hot coal fell out of the fir...
"I ought to reconsider her offer to move in," he mused.“我该重新考虑她让我搬去和她一起住的提议，”他思忖着。The Congress had agreed to reconsider its stance on the armed struggle.国会已同意重新考虑其对武装斗争的态度。I will reconsider my decision.我将重新考虑我的决定....
Almost from the outset, the extravaganza was beset with difficulties.几乎从一开始, 这一盛事就被种种困难所困扰.They will be laying on liquid refreshment to fortify brides-to-be for the shopping extravaganza ahead.他们将为准新娘们准备些酒，好让她们接下来有充沛精力疯狂...
the debate over the effects of heredity and environment有关遗传与环境影响的辩论Radiation has a strong effect on the heredity of fruit flies.射线对于果蝇的遗传产生强烈的作用.Some diseases are present by heredity.有些病是遗传的结果....
In 1818 Fresnel entered a competition sponsored by French Academy.1818年菲涅耳参加了法国科学院主办的一次竞赛.The difficulty was resolved by Fresnel with his addition of the concept of interference.菲涅耳通过加进来干涉概念,解决了这个困难.In many cases, the Si...
If they carry on sinking boreholes then the land is likely to subside.如果他们继续钻洞，地表很有可能下沉。The correctness of the result was proved by some underground boreholes.经过少量的井下钻孔验证,证实了结果的正确性.This paper describes the substance a th...