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beat     
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     Characteristics of Quantum Beat of Degenerated Four-Wave Mixing in In_xGa_(1-x)N/GaN Quantum Well
     In_xGa_(1-x)N/GaN量子阱在时间分辨简并四波混频中的量子特性
短句来源
     An accuracy of 2×10-5±1 Hz in the measurement of beat frequency arisen from a magnetic field and a laser frequency stability of 5×10-9 for an averaging time of 1 sec were obtained.
     磁场产生的频的测量精度可达到2×10~(-5)±1Hz,1秒钟采样时激光频率稳定度可达到5×10~(-9)。
短句来源
     Its beat frequency is 650MHz,stability 1×10 -7  ̄1×10 -8 . The unit is used as light source for double frequency laser interferometer.
     它的频频率为650MHz,稳定度为1×10-71×10-8,用作双频激光干涉仪光源。
短句来源
     The Application of Matlab6.0 in the Combination of Beat
     Matlab6.0在合成中的辅助教学应用
短句来源
     Modeling and Recognition of ECG Beat
     ECG心建模与分析识别
短句来源
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  差拍
     We put forward the heterodyne beat frequency method measuring the frequencydiscriminating curve of CO_2 laser frequency-stabilized system using NH_2DStark cell, in which the central frequency of NH_2D is fixed, laser frequencyis changed and the variation of laser frequency is recorded by the heterodyne beat frequency counter.
     本文提出了固定NH_2D分子吸收线型中心频率而改变激光输出频率,用外差拍频计数记录激光频率的变化的外差拍频测定NH_2D Stark盒稳定CO_2激光频率系统中鉴频曲线的方法。
短句来源
     Magnetic induced beat noise in an intracavity He-Ne laser
     内腔He-Ne激光的磁致差拍噪声
短句来源
     Low-frequency beat noise for gas lasers
     气体激光器的低频差拍噪声
短句来源
     Beat and Random Sampling Techniques in High Speed Data Acquisition Systems
     高速数据采集系统中的差拍和随机采样技术
短句来源
     Application of beat control in shunt active power filter
     差拍控制在有源电力滤波器中的应用
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  搏动
     Results: ①Beating rate of ventricular myocytes: There was no significance in PD98059+Control group (95±13beat/min)(p>0.05),compared with that of control group(98±16 beat/min);
     结果:①细胞搏动频率:PD98059+Control组(95±13 beat/min)与Control组(98±16 beat/min)比较无显著性差异(p>0.05);
短句来源
     Results ①. Beating rate of cardiocytes: The beating rate was significantly slower in A/R group(11.50±3.39beat/min) compared with that of control group(99.83±4.22 beat/min)(P<0.01);
     结果①细胞搏动频率(beat/min):A/R组(11.50±3.39)比正常对照组(99.83±4.22)明显减低(P<0.01);
短句来源
     The beating rate of PD98059+APC group (18±6 beat/min) was significantly lower than APC groups.
     PD98059+APC组(18±6 beat/min)细胞搏动频率显著弱于APC组(p<0.01),与A/R组比较无显著性差异(p>0.05)。
短句来源
     Between APC group(92±10 beat/min) and DMSO+APC group (90±8 beat/min), the beating rate was similar to each other(p>0.05),and Compared with A/R , The beating rate was significantly increased(p<0.01);
     APC组(92±10 beat/min)、DMSO+APC组(90±8 beat/min)对正常心肌细胞搏动频率无明显影响(p>0.05),与A/R组比较均有显著性差异(均p<0.01); APC组、DMSO+APC组之间无显著性差异(p>0.05);
短句来源
     Results: ①The beating rate (98±16 beat·min-1)of ventricular myocytes in Control group was consistent and regular, cell viability(92.2±5.6%)and LDH activity(2.17±1.47 IU·L-1)was considered normal, control myocytes had well-preserved ultrastructure.
     结果:①Control组心肌细胞搏动频率相对恒定(98±16 beat·min-1),节律规则,细胞存活率高(92±14.2%),LDH活性低(2.17±1.47 IU·L-1) ,线粒体内外膜清晰完整,嵴排列清晰。
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  早搏
     Conclusion:The extents of ST segment shifting downward of supraventricular prmature beat in horizontal type or inferio-oblique type≥0.1 mv or supra-oblique≥0.2 mv;
     结论:Holter检出室上性早搏的ST段水平下移或下斜型下移≥0.1mv或上斜型下移≥0.2mv;
短句来源
     1 early beat of ectopia case, occupying 4% and 2 high electric pressure of left ventricle cases, occupying 8%.
     异位早搏1例,占4%; 左心室高电压2例,占8%。
短句来源
     DCG Detection and Analysis of Ventricular Premature Beat in 1150 Cases
     1150例室性早搏的DCG检测与分析
短句来源
     Results 3 cases show ventricular asshythmia,about 0.21% of all(2 cases ventricular prematurventricular beat,1 case nonparoxysmal tactachycardia).
     结果有3例发生心律失常,占总试验人数的0.21%,均为室性(2例室性早搏,1例非阵发性室性心动过速)。
短句来源
     Clinical Analysis of T Wave Changes after Premature Beat in 203 Patients
     早搏后T波改变203例临床分析
短句来源
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  beat
Measurement of the radiation frequency of a pulsed submillimeter-wave gyrotron using beat-note signals with the harmonics of a m
      
This method is based on the analysis of amplitudes of beat notes between the signal under study and radiation of a millimeter-wave frequency synthesizer.
      
The manifestation of high-frequency lunar oscillations in the beat period is demonstrated, together with the feasibility of interpolating these oscillations over short time intervals.
      
For ideal detection we find the known result that the squeezing resource allows to beat the shot-noise limit.
      
Expressions for the oscillations of the luminescence circular polarization in the spin-quantum-beat regime and in the Hanle effect have been obtained, taking into account the electron spin relaxation anisotropy.
      
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Wang's theory for determining the approximate configurational partition function of the adsorbed layer is modified in two different ways. One is to assume that the configurational energy should be corrected: the other to advocate that the deficiency due to a wrong expression for the a priori probability of the. central site is more significant.The configurational partition function is evaluated is both methods and the adsorptipn isotherin and the beat of adsorption computed for the case of quadratic lattice...

Wang's theory for determining the approximate configurational partition function of the adsorbed layer is modified in two different ways. One is to assume that the configurational energy should be corrected: the other to advocate that the deficiency due to a wrong expression for the a priori probability of the. central site is more significant.The configurational partition function is evaluated is both methods and the adsorptipn isotherin and the beat of adsorption computed for the case of quadratic lattice With dipole interaction. values for the last two quantities when a uniform continuous distribution of the distant adsorbed particles is assumed are further given for comparison. The second method, which surpasses the first, is compared with Kirkwood's method. in the case of hexagonal lattice with neighbour interaction. Numerical work is also carried out in this case.

本文就王竹溪先生之理论用两种不同方法加以改良。一种为改变能量公式,另一种为改变中心格点之或然率。用此二法皆可求得近似配分函数。所得关於方格在偶极作用情形下之粘附等温曲线及粘附热之数值用图比较之,并与旧日平均连续分布之理论比较。本文所用之第二法实较第一法为佳,故应用之以讨论一三角格在相邻作用情形下之粘附现象,且应用Kirkwood理论以为比较。数值结果亦有图表之。

The pine caterpiller,Dendrolimus punctatus Walker, has the habit of leav-ing the crown part of a tree and hibernating under the loose bark of thetrunk. The present paper reports the successful control of this pest by treatinga part of the trunk with a DDT suspension. All experiments were carried outat Nanking, 1947-48. When solutions and water suspension containing 5% DDT, 1%γ 666,or 5% 1068 were applied with a brush to the trunk for a width of one footand over-wintering larvae were allowed to crawl over the...

The pine caterpiller,Dendrolimus punctatus Walker, has the habit of leav-ing the crown part of a tree and hibernating under the loose bark of thetrunk. The present paper reports the successful control of this pest by treatinga part of the trunk with a DDT suspension. All experiments were carried outat Nanking, 1947-48. When solutions and water suspension containing 5% DDT, 1%γ 666,or 5% 1068 were applied with a brush to the trunk for a width of one footand over-wintering larvae were allowed to crawl over the treated area, all theinsecticides tested were found to be effective when freshly applied. After oneweek, how-ever, only preparations containing DDT remained effective. DDTwater suspension was markedly better than DDT in kerosene, soybean oil, oracetone. Trees treated with a 5% DDT water suspension were still very toxic tothe caterpillars at the end of six weeks. The number of caterpillars crawling over a DDT-treated area would notinfluence the toxicity of the DDT film under practical field conditions. In oneexperiment all area of twenty inches square, treated with a 5% DDT suspension,still showed high toxicity to the caterpillars after 1,800 larvae had crawled overthe area in a period of nine days. Caterpillars were found to be more resistant to DDT in summer than inwinter. By increasing either the concentration of DDT to 10-15% or thewidth of the treated area to 2-3 feet, the "trunk treatment method" could beused as well in summer, if the caterpillars were beaten down to the grounedafter the trees had been treated with DDT. Under the field conditions in Nanking, 1947-48, the pine caterpilIars beganto leave the crown part of the trees and seek hibenation quarters in November.They became active again early in March, hence tree should he treated withDDT not later than the dates mentioned above. A total of 157,658 trees were treated with DDT on the Purple Mountain,Nanking, 1948. Examinations showed that larval population decreased 90-99%in the treated area, while in the check area an increase in population of16-350% had been observed.

本文研究在松树干上涂刷有持久性的药剂以防治越冬松毛虫的可能性。1947—48年在南京试验及实施防治的结果简述如下: (一)在实验室内使越冬松毛虫爬行越过涂有一市尺宽各种药液的松树干的结果,证明5% DDT,1%γ666,与5% 1068的悬液或溶液。在涂药的当天均 有相当高的杀虫效力,惟一周以后γ666与1068完全失效,仅DDT仍保持强大的毒力。DDT水悬液显著较DDT火油、大豆油或丙酮溶液为佳。涂有5%DDT悬液的松树杆曝露田间六星期后,杀死松毛虫能力仍达100%。 (二)据试验的结果,自制的可湿性DDT,内含DDT50%,稀释剂45%,与肥皂5%,尚适宜于防治松毛虫之用。 (三)松毛虫爬行的次数对涂药面积上DDT毒力的影响极微,在二十平方市寸涂有5% DDT悬液的小面积上,9天之内经过1800头松毛虫爬行后,毒力仍未减小,死亡率尚在90%以上。 (四)夏季松毛虫较越冬松毛虫不易杀死。夏季松毛虫抵抗DDT的能力随龄期而增强。试验中显示如增加药液浓度至含DDT 10—15%,或增加涂药的宽度至2—3市尺,夏季幼虫亦能中毒死亡。故树干涂药法亦可应用在夏季防治上,惟必须在涂药后将松毛虫从树上击落,使其在爬返树冠...

本文研究在松树干上涂刷有持久性的药剂以防治越冬松毛虫的可能性。1947—48年在南京试验及实施防治的结果简述如下: (一)在实验室内使越冬松毛虫爬行越过涂有一市尺宽各种药液的松树干的结果,证明5% DDT,1%γ666,与5% 1068的悬液或溶液。在涂药的当天均 有相当高的杀虫效力,惟一周以后γ666与1068完全失效,仅DDT仍保持强大的毒力。DDT水悬液显著较DDT火油、大豆油或丙酮溶液为佳。涂有5%DDT悬液的松树杆曝露田间六星期后,杀死松毛虫能力仍达100%。 (二)据试验的结果,自制的可湿性DDT,内含DDT50%,稀释剂45%,与肥皂5%,尚适宜于防治松毛虫之用。 (三)松毛虫爬行的次数对涂药面积上DDT毒力的影响极微,在二十平方市寸涂有5% DDT悬液的小面积上,9天之内经过1800头松毛虫爬行后,毒力仍未减小,死亡率尚在90%以上。 (四)夏季松毛虫较越冬松毛虫不易杀死。夏季松毛虫抵抗DDT的能力随龄期而增强。试验中显示如增加药液浓度至含DDT 10—15%,或增加涂药的宽度至2—3市尺,夏季幼虫亦能中毒死亡。故树干涂药法亦可应用在夏季防治上,惟必须在涂药后将松毛虫从树上击落,使其在爬返树冠时接触药剂而死亡。 (五)自然情形下,南京松毛虫在十一月即开始下树越冬,至来年三月初开始活动上树,故采用树干涂药法防治下?

In intravenous doses of 12.5—50 mg/Kg,pota ssium antimony tartrate produced in anesthetised dogs the following circulatory effects:a fall of blood pressure,some diminution in the amplitude and rate of heart beat,and an increase in the spl- enic volume and rhythmic contractions.These effects were not significantly altered by bilateral vagotomy,provided the operation had not seriou- sly lowered the blood pressure.Under our experi- mental conditions,neither potassium chloride in doses equivalent to the potassium...

In intravenous doses of 12.5—50 mg/Kg,pota ssium antimony tartrate produced in anesthetised dogs the following circulatory effects:a fall of blood pressure,some diminution in the amplitude and rate of heart beat,and an increase in the spl- enic volume and rhythmic contractions.These effects were not significantly altered by bilateral vagotomy,provided the operation had not seriou- sly lowered the blood pressure.Under our experi- mental conditions,neither potassium chloride in doses equivalent to the potassium content of cur doses of potassium antimony tartrate,nor the tar- tric-bicarbonate buffer with the same pH as the drug solution caused similar circulatory changes.

12.5—50mg/kg 酒石酸锑钾的静脉注射,可使麻醉犬血压降低,心臓收缩减弱,心率减慢,脾血管扩张与脾囊的节律性收缩,将两侧迷走神经切断后,如血压不显著降低,则酒石酸锑钾的上述各种作用并不明显改变。氯化钾在相当于酒石酸锑钾中所含钾量的剂量时并不产生相似作用。酒石酸锑钾溶液的微酸性,在酒石酸锑钾的上述各种作用中,并不发生任何影响。

 
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