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   vertical opening 的翻译结果: 查询用时:0.202秒
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vertical opening
相关语句
  垂直扩张
     Ratio of vertical opening Ch = 16. 22 V-0. 618;
     网口垂直扩张率Ch=16.22V-0.618;
短句来源
     With the dimensions and shapes of the trawls unchanged,the experimental results show that the average water resistance of the high strength polyethylene trawl nets was reduced by 6.5%~16.2%; the vertical opening of net mouth increased by 0.9%~25.7%,and the energy consuming rate reduced by 14.5%~33.5%.
     结果表明,在其它条件不变的前提下,应用高强度聚乙烯网线的拖网与原生产网相比,在2.5~4.5kn拖速下,网具阻力可平均下降6.5%~16.2%,网口垂直扩张可提高0.9%~25.7%,能耗系数下降14.5%~33.5%。
短句来源
     (4)With the current velocity ranging from 1.0~3.5 kn and 2 supporting rods added to the spreader,the vertical opening went up slightly and the horizontal spreading increased by 2.5% at lower velocity and by 12.2% at higher velocity.
     (4)当流速从10~35kn时,经增加2根扩张帆布的撑杆后,网口垂直扩张略有增加,增加幅度为16%~22%; 水平扩张随流速的增加扩张性能提高明显,增加幅度为25%~122%。
短句来源
     The test showed: 1.By curve cutting in the top and bottom parts of the net mouth, net drag decreased by 3. 9% averagely,vertical opening and horizontal spreading averagely increased by 4. 7% and 7. 2% respectively.
     试验表明,(1)背腹网网口网衣弧形剪裁后,背腹网网衣受力均匀程度明显改善,网具阻力平均下降3.9%,网口垂直扩张平均增加4.7%,水平扩张平均增加7.2%。
短句来源
     The various performances of large - sized mesh pair trawl of 294kW fishing vessel, such as trawl lesistance, vertical opening and energy consumption and etc. , were discussed by means of rnodel testing in towingtank.
     采用模型试验方法,对294kW渔轮疏目双拖网的拖曳阻力、网口垂直扩张和能耗等各种性能进行了研究。
短句来源
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  “vertical opening”译为未确定词的双语例句
     h/104m3 at 3 knots, which shows that the performance of vertical opening is better than those of the same kind of other trawls.
     h/10~4m~3,在同类渔具中较优;
短句来源
     The results were as follows: (1) With the other conditions unchanged, side panel width has obvious impact on the vertical opening of four panel trawls.
     试验结果表明:(1)因侧网宽度变化对扫海面积影响的规律是侧网宽度越小,扫海面积越大;
短句来源
     Bit error rate and Q factor are correlated and they can be observed from the vertical opening degree of eye graphics therefore the fast evaluation and measurement to the transmission quality of DWDM system can be realized through confirming the pseudo-error rate of Q factor.
     由于误码率与Q因子相关,而Q因子或误码率又可由眼图的垂直张开度观测,故通过确定Q因子的伪误码率的方法就能快速评定测量DWDM系统的传输质量。
短句来源
  相似匹配句对
     On Vertical Scaling
     纵向量表制作浅谈
短句来源
     On vertical metaphors
     垂直性空间隐喻初探
短句来源
     Opening to whom
     向谁开门
短句来源
     The Opening Fund
     论开放式基金
短句来源
     Ratio of vertical opening Ch = 16. 22 V-0. 618;
     网口垂直扩张率Ch=16.22V-0.618;
短句来源
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  vertical opening
Development of turbulent diffuse flame in a compartment with a vertical opening is studied experimentally and numerically.
      
Efficacy and side effects depend on the type of appliance, degree of protrusion, vertical opening, and other settings.
      
We find a vertical opening angle that is about kN smaller than that from a bending magnet.
      
The ore pass itself may consist of a single sub-vertical opening or be made up of several branches.
      
The lateral component in the vertical opening movement was similarfor both the elderly and younger subjects.
      
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The operating performance of beamtrawls has been carried out in offshore watersof the Jiangsu and zhejiang provinces, during March 1982 through July 1983. Basedon fishing survey, a series tests for four kinds of model beamtrawls have been done instill water tank of Nanjing Forestry College in Apr. 1983. Model nets and actualtrawls were calculated according to the criterion of M.Tauti. The large scale ratio is1/10 and the small scale ratio is 1. Moreover,beamtrawling tests were actually takenin July 7--8, 1983,...

The operating performance of beamtrawls has been carried out in offshore watersof the Jiangsu and zhejiang provinces, during March 1982 through July 1983. Basedon fishing survey, a series tests for four kinds of model beamtrawls have been done instill water tank of Nanjing Forestry College in Apr. 1983. Model nets and actualtrawls were calculated according to the criterion of M.Tauti. The large scale ratio is1/10 and the small scale ratio is 1. Moreover,beamtrawling tests were actually takenin July 7--8, 1983, The power of vessel engine is 120 hp. Towing speed and the warptension are measured. the reading is taken with scale lupe (×10). The tension is lookedup from calculated line. The height of trawl mouth is measured with normal dista-nce meter. The meter is tied on centre of the beam and its gas bag is towed behindfootrope with a short wire. The declination angle of the warp is also measured.The results are concluded as follows:1. Current beamtrawls of Jiansu and Zhejiang are divided into three kinds. Theyare small mesh with twin bags, small mesh with multi--bag all for catching shrimpsand big mesh one with twin bags for catching both shrimps and crabs.2. The common similarities of these beamtrawls is with wider horizontal spread. smaller vertical opening, low towing speed and closely touching to sea bottom. Thesebeamtrawls fully touch to bototm and hence they can effectively catch both shrimpsand crabs, and protect fish resources from harm as well.3. Among these trawls, in the operating performance the big mesh beamtrawlwith twin bags obtains the best result, it can catch not only shrimps but also crabs,and so it is more efficient. But the mesh size is too big that a certain rate of shrimpswill be lost. as to the small mesh beamtrawls that with multi-bag is better than that oftwo bags. The weak point of the small mesh beamtrawls with twin bags is that itshanding ratio is too smaller the net could not spread widely as the trawl was towing.Its belly was attached to sand bottom easily.4. The spent power for operation of all these beamtrawls is less than 1/10. Butall length of the beam almost reaches the limit of operation allowed. In order to getlarge horizontal spread further, it is suggested that to adopt the operation method ofthe veesel with two or three nets. It's necessary to keep the beamtrawl balance intowed period. Finally, this fishing gear and fishing method should be developed offthe shallow waters, and avoid in making any harmness to the resource of fish.

本文报道了江浙沿海桁拖网作业性能试验的初步结果。作者将现用的桁拖网分为三个类型、五种结构模式,经过网具模型静水池试验和海上实测,对各类桁拖网的作业性能进行了比较研究。试验的结果表明,在现用的各类桁拖网中,以大网目双囊虾、蟹两用拖网的性能最佳,在相同拖曳阻力条件下,其网口高度最大,而且生产上能兼捕虾蟹。但其网口部位的网目似乎存在偏大的缺点,有漏虾现象。在其他各类中,小网目多囊桁拖网的性能一般优于双囊桁拖网。作者认为,桁拖网捕虾的渔获效率主要取决于网具的水平扩张即桁杆长度。现用桁拖网的桁杆长度已达到渔捞操作所允许的最大长度,但实际作业拖网所用功率一般都在渔船额定功率的10%以下,存在着能耗极不经济的状况,对此,极有研究改进之必要。

The 960.000m×226.275m(107.800m) mid water trawl, widely used in China for Alaska pollack fishing in the North Pacific in the 90's,was selected as the target net in model testing through which to research the effect of the width of side panel as well as the length of wings and body on the performance of four panel mid water trawls. The results were as follows: (1) With the other conditions unchanged, side panel width has obvious impact on the vertical opening of four panel...

The 960.000m×226.275m(107.800m) mid water trawl, widely used in China for Alaska pollack fishing in the North Pacific in the 90's,was selected as the target net in model testing through which to research the effect of the width of side panel as well as the length of wings and body on the performance of four panel mid water trawls. The results were as follows: (1) With the other conditions unchanged, side panel width has obvious impact on the vertical opening of four panel trawls. In the towing speed of 3.5 to 5.0knot net A 2, in which L f/L d (L f the side panel width, L d belly panel width) was 0.714, got the greatest vertical opening. When towing speed increased to 5.5knot and more, net A 3 with L f/L d of 0.846 reached the top value of vertical opening. If the L f/L d value went to the range above 1.0, the vertical opening decreased with the increase of L f/L d. It was found in the model testing that the smaller the side panel width was the greater the sweeping section area would be. (2) At lower towing speed, shorter wings would result in higher vertical opening of net mouth. When trawling speed went above 4.5knot, net B 2 of 17. 678% in L s/L a (L s stretched lenth of wing, L a stretched lenth of full net) obtained the highest vertical opening value. When L s/L a was smaller than 30.936% the sweeping section area increased with extention of wing while in the condition of L s/L a above 30.936%, the sweeping area was reversely proportional to the L s/L a value. At all towing speed, drag force increased when wings lengthened. (3) When the L b/C (L b body length, C stretched circumference of fore part of body) value was 25.554%, the highest vertical opening of net mouth was reached. The change rate of vertical opening at different speed resulted from the change of body length were directly proportional to the towing speed. As to the changes of energy consumption coefficient for net towing and that of vertical opening with horizontal opening unchanged, the trends were basically the same.

通过拖网系列模型水池试验,研究四片式中层拖网网衣主要部件尺寸变化对网具性能的影响。试验结果表明:(1)因侧网宽度变化对扫海面积影响的规律是侧网宽度越小,扫海面积越大;在拖速3.5~5.0knot的范围内,侧网与背(腹)网之比为0.714时,网口垂直扩张最大。(2)在网袖长度与网具全长之比为13.258%~30.936%范围内,扫海面积随着网袖长度的增长而增大;当其比值大于30.936%以后,扫海面积随着网袖长度的增长而减小。网袖长度对网具阻力影响的趋势是网袖长度越长网具阻力越大。(3)网身长度与网口拉直长度之比为25.55%时,网口垂直扩张最佳、能耗系数最小

The effect of canvas spreaders on the performance of anchored sow net was studied through model test in tank.(1)The attack angle index of canvas spreader at 16 1~17 4 brought smaller net drag,better net performance as well as larger vertical opening and horizontal spreading,while the performance was poorer with the increase of the attack angle.(2)The height increasing of the canvas spreaders got down with the increase of current velocity.(3)When 3 pieces of canvas at the middle section of the spreader...

The effect of canvas spreaders on the performance of anchored sow net was studied through model test in tank.(1)The attack angle index of canvas spreader at 16 1~17 4 brought smaller net drag,better net performance as well as larger vertical opening and horizontal spreading,while the performance was poorer with the increase of the attack angle.(2)The height increasing of the canvas spreaders got down with the increase of current velocity.(3)When 3 pieces of canvas at the middle section of the spreader were removed,the horizontal spreading sharply declined.At the current velocity less than 2.0 kn,the net performance,when 1 piece in center section of the canvas was removed,was better than that when 2 pieces in center section removed. (4)With the current velocity ranging from 1.0~3.5 kn and 2 supporting rods added to the spreader,the vertical opening went up slightly and the horizontal spreading increased by 2.5% at lower velocity and by 12.2% at higher velocity.

通过对帆式张网模型水池试验,研究了扩张帆布对帆式张网网具性能的影响。结果表明:(1)扩张帆布冲角表征值为161~174°时,网具阻力较小,网口垂直扩张和水平扩张较大,网具性能较好;随着冲角表征值的变大,网具性能有所下降。(2)帆式张网网口垂直扩张随扩张帆布高度增加而变高,随流速的加大而增高幅度有所减小。(3)抽取中间3块扩张帆布(5m×3),帆布扩张力明显不足;当流速小于20kn时,抽取中间1块比抽取最后第2块网具性能更好。(4)当流速从10~35kn时,经增加2根扩张帆布的撑杆后,网口垂直扩张略有增加,增加幅度为16%~22%;水平扩张随流速的增加扩张性能提高明显,增加幅度为25%~122%。

 
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