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  spring
     Discussion on the Replacement of Plate Spring Steel 60Si_2Mn with 28SiMnB
     28SiMnB选作板钢代替60Si_2Mn的可行性
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     Optimization analyses of B_0-B_0 electric locomotive axle load spring adjustment
     B_0-B_0轴式电力机车轴重调寻优分析
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     Analysis of Spring Failure for QD04-302 Starter
     QD04-302起动机刷断裂原因分析
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     On Feasibility of Substitution of Steel 28SiMnB for 60Si2Mn for Spring Leaves
     用28SiMnB钢代替60Si2Mn钢制造板的可行性论证
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     Calculation of Contact Torsional Spring in DZ15-40 Circuit Breaker (I )
     对DZ15—40断路器触头扭的计算及探讨(Ⅰ)
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     After 12 weeks of treatment, the average width of L4-L4 and L5-L5 in the former group was enlarged by 2.3 mm and 2.5 mm, respectively, significantly greater than that in the latter group (1.0 mm and 1.2 mm, P<0.05).
     通过12周的扩弓治疗,活动舌弓组L4-L4及L5-L5间宽度分别平均扩大2.3mm及2.5mm,四眼组L4-L4及L5-L5间宽度平均扩大1.0mm和1.2mm,两处理组组间比较有显著性差异(P<0.05)。
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     Results After 8 weeks of arch expansion, the average width of U4-U4 and U5-U5 in removable lingual arch group was enlarged by 2.2 mm and 3.0 mm, and that in Quad-helix group by 2.3 mm and 3.5 mm, respectively, showing no significant differences between the two groups (P>0.05).
     结果通过8周的扩弓治疗,活动舌弓组U4-U4及U5-U5间宽度分别平均扩大2.2mm和3.0mm,四眼组U4-U4及U5-U5间宽度平均扩大2.3mm和3.5mm,两处理组组间比较无显著性差异(P>0.05)。
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     A New Model of Wireline Coring Tool(XYD-S75C-I)
     XYD-S75C-I型绳索取心无冲击回转钻具生产试验效果
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     Fracture Analysis of B48 Coil-Spring for Automobile Engine
     汽车发动机B48盘断裂原因分析
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     Optimization of Heat Treatment Process on 60Si2Mn Vehicle Plate Springs
     60Si2Mn钢汽车板热处理工艺优化研究
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  相似匹配句对
     STUDY OF TORSION SPRING CLUTCH
     扭离合器的研究
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     Fracture Analysis of Turn-Spring
     扭断裂分析
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  spring
Here the bridge is seen as a vibrating beam supported by cables, which are treated as spring with a one-sided restoring force.
      
The peak values of fine root biomass were observed both in spring and in autumn, but SRL and RLD were the highest in spring and lowest in autumn.
      
Specific root length and root length density were higher in spring and summer, which means that fine root diameter was thinner.
      
A mass-spring-damper dynamics model of FS system was proposed and the hysteresis characteristic of the FS system was analyzed.
      
According to the design features of a hydro pneumatic spring, the necessity of a separate damping valve is proposed.
      
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Following a series of experiments conducted in East China Agricultural Re-search Institute (Nanking) during the past years,the "red arsenic",a well-knownraw-drug (containing approximately 90% of As_2O_3,9% of AS_2S_2 and 1% of mis-cellaneous substances),is found to be acceptable as seed disinfectant for the controlof cereal smuts.This raw-drug is not only excellent in effectiveness,but alsoeasily obtainable in this country. Incidence of infection of wheat bunt in the plots receiving 3 different treatments,namely,red...

Following a series of experiments conducted in East China Agricultural Re-search Institute (Nanking) during the past years,the "red arsenic",a well-knownraw-drug (containing approximately 90% of As_2O_3,9% of AS_2S_2 and 1% of mis-cellaneous substances),is found to be acceptable as seed disinfectant for the controlof cereal smuts.This raw-drug is not only excellent in effectiveness,but alsoeasily obtainable in this country. Incidence of infection of wheat bunt in the plots receiving 3 different treatments,namely,red arsenic (inoculated seed grains dusted at the rate of 0.05 % by weight),copper carbonate (0.3%),ethyl mercury phosphate (0.05%),during the last 4years,averaged 0.2%,1.4% and 2.7%,respectively against 44.8% in the control.The corresponding figures for the flag smut of wheat were respectively 3.1%,0.8%,5.0% against 20.5%; for the covered smut of barley,0.9%,1.1%,0.9% against1.6%; for the kernel smut of oats,6.8%,3.1%,0.5% against 41.4%.The resultsmake us believe that this native raw-drug is not inferior,in some cases even su-perior,to other fungicides now extensively manufactured and considered efficientin preventing the various cereal smuts.But in the control of the covered smut ofbarley,as we have already shown elsewhere,another native raw-drag,sulphur ismore effective.In the last 3 years,field experiments were carried out to studywhether arsenic gives beneficial effect on the germination of seed and on the yieldof grain.Arsenic was applied as dust to the clean seed wheat following thestandard hot water treatment.Data showed that the number of seedlings in asingle 12-ft.row ranged 368-400 from treated seed as compared with 362-386 fromuntreated seed.Yield of grain also increased 4.7 to 23.6 per cent.It is,there-fore,evident that this fungicidal dust,when properly used,is at least not injuriousto seed wheat.The following points,however,must be borne in mind when thearsenic treatment is put into practice: (1) The dosage should not be higher than0.05 per cent and lower than 0.005 per cent by weight of seed grain.Otherwise, ??it would be either injurious to seed germination or ineffective for disease control.(2) Arsenic can be applied only to thoroughly dried seed grain. Seed wheat con-taining 24% of moisture when treatment was made, lost its vitality in a very fewdays, while that with less than 12% moisture can be stored for one month withoutspoilage. (3) Arsenic reduced germination of seed grain after storage at the highertemperatures. Under laboratory conditions, seeds, treated during hot summer whenthe air temperature ranged between 31 and 35℃, largely lost their germinativecapacity within half a month, but seeds, treated in cooler season when air tempera-ture dropped below 22℃, germinated as untreated ones after being stored for 3months or longer. (4) The relative humidity during storage played the most im-portant role in causing arsenic injury to the seeds. Seeds of wheat containingproper moisture (around 12%) dusted with arsenic at correct rate (0.05% byweight), failed to germinate after being stored for 5 days at temperatures above30℃ under 100% r.b.; but there was little or no injury after a storage period ofover 7 months at 37℃ under 18% r.h. (5) The length of storage period is alsoa factor in causing arsenic injury, and at the same time affecting the efficiency ofthe treatment. Seeds dusted with arsenic at a dosage of 0.05% during mid-summer(July of 1953) retained their germinative capacity within 0.5 month, but no seedsgerminated after 2.5 months' storage. On the other hand, almost complete controlof disease was obtained from thoroughly infested seed grain dusted with 0.0125%of arsenic and stored for 60 days, but similarly treated seeds which were sownimmediately, gave 45.15% infection as compared with 72.77% in the check plot.Consequently, the proper method of using arsenic against cereal smuts is to dustthoroughly dried seed grain at the rate of 0.05-0.0125% by weight and to storetreated seeds under cool (below 25℃) and rather dry (around 80% of r.h.) con-ditions for a period of about one month. According to the results obtained from experiments conducted under bothlaboratory and field conditions, it is found that there is no synergism nor antago-nism between arsenic and such filling materials as ashes, slake lime, talc, charcoalpowder, and calcium phosphate; and that neither soil temperature nor soil moistureact as factors influencing the germination of treated seeds.

(一)用紅砒粉末作為種子消毒處理藥劑,對於幼苗感染性的小麥腥黑穗、小麥稈黑穗及燕麥堅黑穗等,有極良好的防治效果。但對大麥堅黑穗及條斑病,則不見功。(二)紅砒使用得法,對於麥種絕對無害;而且對於大麥、小麥的清潔種子,有積極的增產作用;惟對於燕麥還未能肯定。(三)紅砒粉末的拌種用量,當以種子重的0.025—0.05%為準僦?.005%,仍有殺菌效果。(四)為了增大藥物的容積,使得微量的紅砒粉末能够均勻週到地沾着每一麥粒,可用滑石粉、木灰末、甚至消石灰、草木灰或過磷酸鈣來稀释。(五)麥種拌砒後,須經一定期間的貯藏後播種,方顯出其强大的殺菌防病效果珉S拌隨種,則效果较少。至貯藏期間的久暫,則當因季節和用量等等而異。大致可以一個月為度。(六)紅砒使用不得其法,易起藥害。而藥害有無的關键,主耍在於拌砒後貯藏中的濕度,其次才是温度。如充分乾燥,在酷暑的氣候條件(37℃)下,貯藏7個月,尚??無妨礙。至於播種時的地温土濕,則關係極微。(七)紅砒的藥害與麥種處理當時的含水量有密切關係.含水量多,極為蝛U;含水量在12%以下,即安全無礙。(八)在自然狀况下用紅砒處理麥種,應當避去炎夏季節。又麥種拌砒前,必須充分...

(一)用紅砒粉末作為種子消毒處理藥劑,對於幼苗感染性的小麥腥黑穗、小麥稈黑穗及燕麥堅黑穗等,有極良好的防治效果。但對大麥堅黑穗及條斑病,則不見功。(二)紅砒使用得法,對於麥種絕對無害;而且對於大麥、小麥的清潔種子,有積極的增產作用;惟對於燕麥還未能肯定。(三)紅砒粉末的拌種用量,當以種子重的0.025—0.05%為準僦?.005%,仍有殺菌效果。(四)為了增大藥物的容積,使得微量的紅砒粉末能够均勻週到地沾着每一麥粒,可用滑石粉、木灰末、甚至消石灰、草木灰或過磷酸鈣來稀释。(五)麥種拌砒後,須經一定期間的貯藏後播種,方顯出其强大的殺菌防病效果珉S拌隨種,則效果较少。至貯藏期間的久暫,則當因季節和用量等等而異。大致可以一個月為度。(六)紅砒使用不得其法,易起藥害。而藥害有無的關键,主耍在於拌砒後貯藏中的濕度,其次才是温度。如充分乾燥,在酷暑的氣候條件(37℃)下,貯藏7個月,尚??無妨礙。至於播種時的地温土濕,則關係極微。(七)紅砒的藥害與麥種處理當時的含水量有密切關係.含水量多,極為蝛U;含水量在12%以下,即安全無礙。(八)在自然狀况下用紅砒處理麥種,應當避去炎夏季節。又麥種拌砒前,必須充分晒乾。拌砒後,必須貯置高燥處所。

The natural frequency of the blade of a Pohlmann whistle is studied. On the basis of the method of Leitner and Hicdemann for computing the fundamental frequency, a formula for the first overtone is derived. An approximate formula for the fundamental frequency in a liquid medium is also presented. Experimental results obtained in water fairly agree with the approximate formula.

本文研究片哨里片的固有频率.根据Leitner和Hiedemann的片基频计算方法,推出了片二次频的公式.提出片基频在液体介质中的近似公式.在水中获得的实验结果与近似公式相符合.

The causes of the "exhaust backfire" and "hunting" of the 1E65F two-stroke air-cooled diesel engine are analysed and the remedial measures suggested. The advantages of employing torsion springs in place of the conventional outer and inner springs in the speed-adjusting system have also been shown.

本文分析了1E65F二冲程风冷柴油机的“放炮”、“游车”现象的产生原因和克服措施。文中还论述了在调速系统中采用扭代替现用的内、外弹所取得的效果。

 
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