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  harrow
     Result show,it is simple and convenient that harrow the till-less rice field with remain stubbles and water,which saves water100m 3/667m 2 ,saves consume 17.4yuan/667m 2 ,increases production13.6kg/667m 2 and raises income 17.68yuan/667m 2 .It's clear that this is an important countermeasure of planting rice for fighting against drought.
     结果表明,这种压方法,简便易行,节水100m3/667m2,节支17.4元/667m2,增产13.6kg/667m2,增收17.68元/667m2。 是抗旱种稻的一项重要技术措施。
短句来源
     Compared to conventional tillage,serrated disk harrow tillage can improve leaf area index and seed filling rate and increase maize yield by 14.5%. However,no-tillge with straw cover decreased maize yield by 11%.
     相对于常规耕作,耕秸秆还田方式能提高叶面积指数和灌浆速率,增产14.5%,与旋耕秸秆还田方式无明显差异,而免耕秸秆覆盖方式减产11%。
短句来源
     Development of Medicament Accession Auto-Control System of Harrow Concentrator
     式浓缩机药剂添加自动控制系统的开发
短句来源
     Analysis of Kinematic and Dynamic Simulation of Operating Part of a Powered Harrow
     旱地驱动工作部件运动学分析及动态仿真
短句来源
     Researching Performance of Power Rotary Harrow
     动力立式旋转的性能研究
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  rake
     Development of New Type Vacuum Rake Dryer
     新型真空式干燥机的开发
短句来源
     The technical transform of NG30 rake thickener
     NG30型式浓缩机的技术改造
短句来源
     Analysis and transform of φ30 m rake thickener efficacy raising
     φ30m式浓缩机效能提高的分析与改造
短句来源
     Some Problems about the Dynamic Total Pressure Rake Design of Aircraft Intake
     飞机进气道动态总压设计的若干问题
短句来源
     Design of portable type rake bucket loading conveyer and its application
     轻便型斗装载机设计与应用
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  “耙”译为未确定词的双语例句
     The grass yield was continuously increased by 4.5%~20.2% and 17.4%~49.9% with 75~225 kg/hm2(NH4)2SO4 and 1 500~4 500 kg/hm2 CaSO4 applied respectively following plowing-harrowing soil and reseeding leguminous plant.
     在翻补播的基础上施用(NH4)2SO475-225 kg/hm2和CaSO41 500-4 500 kg/hm2,牧草产量可分别提高4.5%-20.2%和17.4%-49.9%。
短句来源
     Use the best way which is 100 kg/667 m2 before harrowing with ammonium sulphate 5 kg(period of seedling establishment), carbamide 5.72 kg, diammonium 5.22 kg and K2SO4 5 kg(primary tiller), carbamide 5 kg(secondary tiller), carbamide 3 kg(heading stage) can increase yield 48.9 kg/667 m2, it can obtain benefits about 41.42 yuan.
     667m2稻田前施用绿色水稻专用肥100kg,再于返青期施硫铵5kg,一次分蘖期施尿素5.72kg、二铵5.22kg、K2SO45kg,二次分蘖期施尿素5kg,抽穗期施尿素3kg,效益最佳,667m2增产稻谷48.9kg,,获纯利润41.42元左右。
短句来源
     500m~3 trail suction dredger (Hangjun 14)
     500m~3吸挖泥船(航浚14号)
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     Structure of PW20/4 scraper raking equipment and application situation
     PW20/4斗式清污机结构和使用情况
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     Structure design of a 13000 m~3 large suction hopper dredger
     13000m~3大型吸挖泥船的结构设计
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  harrow
Clones of Iotrochota birotulata characterized by harrow branches suffered disproportionately greater losses than clones with more robust branches.
      
In previous papersEzeilo [3],Harrow[4, 5] had established stability results for the equations(1.3), (1.4) and(1.5).
      
The results extend those obtained by Harrow[1] for the same equation(1.1).
      
The study was set in urban Harrow, Middlesex, UK and rural Cambridgeshire, UK.
      
Mixing with a harrow in the top 2 inches of soil was ineffective even when 80 pounds per acre were used.
      
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  rake
The first is that the decision threshold of RAKE is dynamic for different channel environments; the other is that we can improve the traditional TH-PPM modulation, which is, encoding the transmitted data symbol with balance code.
      
Compared with the dynamic threshold method, the balance encoding scheme can be implemented more easily, and is more robust to the channel time variant characteristics, the channel estimation of RAKE receiver and the combination techniques.
      
However, in this case, due to the rapid time-variability of the underwater channel, and the influence of inter-symbol interference (ISI) and inter-channel interference (ICI), the conventional rake receiver may fail to function.
      
This paper investigates a family of multiuser receivers that combined decorrelating detection, antenna diversity and RAKE multipath diversity.
      
2-D rake receiver based on space-time channel parameter estimation
      
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  rabble
Social junk, social dynamite and the rabble: Persons with AIDS in jail
      
This article introduces a theoretical framework comprised of Irwin's (1985) concept of the rabble and Spitzer's (1975) notes on social junk and social dynamite.
      
The Addams area is probably a more orderly slum than many others, and it departs sharply from the common image of an atomized and unruly urban rabble.
      
Mechanization of the draining of liquid slags by a water-cooled rabble
      
Rabble Hoff\\'crr soundl\' defeated hy a ing only a douhle to Vince The fourth inning for the Sox man made a mce.
      
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Coilia mystus (L.) is a small fish of economic importance, belonging to the Family Engraulidae. It occurs abundantly along the coast of Amoy and vicinity. The present investigation was undertaken with the chief object of finding out the compostion of food and its seasonal variation. A total of 612 stomachs were examined; of these, only 22 stomachs were found to be empty. The following are the results of the investigation:(1) Coilia mystus feeds chiefly upon planktonic Crustacea, of which Copepoda is, by far,...

Coilia mystus (L.) is a small fish of economic importance, belonging to the Family Engraulidae. It occurs abundantly along the coast of Amoy and vicinity. The present investigation was undertaken with the chief object of finding out the compostion of food and its seasonal variation. A total of 612 stomachs were examined; of these, only 22 stomachs were found to be empty. The following are the results of the investigation:(1) Coilia mystus feeds chiefly upon planktonic Crustacea, of which Copepoda is, by far, the most important, constituting no less than 75.9% of total food. Of the 15 species of Copepoda identified, Paracalanus pqrvus, Pseudodiaptomus marinus and Tortanus forcipata are relatively more important than the others. Among other Crustacea, the relative importance of various groups Is of the following order: Decapoda (including Lucifer and Brachyuran larvae) > Mysidae > Euphau-siacea > Amphipoda > Ostracoda > Cumacea > Stomatopoda. Next to Crustacea in the order of importance of food conic Chaetognatha and fish ova, the former being the more important of the two. Judging from the composition of food, Coilia mystus is a plankton-feeder.(2) The composition of food is more or less subject to seasonal variation. The order of numerical importance of various groups* in the four seasons is as follows: SPRING (Mar.-May): Copepoda > fish ova > Decapoda > Amphipoda > Mysidae> Euphausiacea > Cumacea> Stomatopoda, young fish. SUMMER (Junc-Aug.): Copcpoda> fish ova> Decapoda >Mysidae> Amphipoda> Euphausiacea > Cumacea > young fish.AUTUMN (Scpt.-Nov.): Copepoda > Decapoda > Mysidae > Ostracoda > Euphausiacea > Amphipoda > Stomatopoda > young fish.WINTER (Dec.-Feb.): Copepoda > Decapoda > Euphausiacea > Cumacea > fishova > Mysidae > Amphipoda > young fish > Stomatopoda. (3) The composition of food varies with age or length (from the tip of snout to the end of body, exclusive of caudal fin) of fish which appears to he related to the density of gill-rakers. The younger fishes (less than 15 cm. in length) with denser gill-rakers (2.0-2.7 rakers per 1 mm.) feed largely upon smaller crustaceans (Cope-poda); whilst the older fishes (over 15 cm. in length) with sparser gill-rakers (1.4 1.9 rakers per 1 mm.) feed largely upon larger crustaceans (Mysidae, Euphausiacea, Stomatopdda, Decapoda). It shows that increase in the size of fish is associated with increrase in the size of food animals eaten.(4) There exists a fairly close agreement between the composition of food and the composition of plankton in the surrounding waters. During the months of March and November when both fish and plankton were collected at the same time off Hai-Chen near Amoy, Copepoda was found to be the most dominant group in both food and plankton. It shows that the fish fed heavily upon those crustaceans occurring most abundantly in the plankton. In this respect, Coilia mystus exercises no selectivity of food. The writers are of the opinion that abundance and availability rather than selection by the fish determine the species of animal eaten.(5) A comparison of the food of Coilia mystus with that of other Clupeoids in Amoy waters reveals the predominance of Copepoda in the diet of most of these fishes. For the sake of increasing the yield of these economic fishes, it is essential to enhance the production of Copepoda in nature by artificial means such as to fertilize the water with nutrient salts, especially phosphates and nitrates, to increase the production of phytoplankton which will, in turn, lead to the higher production of Copepoda.

1.六丝鲚的食料差不多完全是浮游动物,以甲壳类为主,其中以桡足类为最重要、十足类(包括莹虾)次之,糠虾类,端足类,磷虾类更次之。除甲壳类以外,它还捕食很多毛头类和鱼卵,所以六丝鲚应属蜉食性的鱼类。 2.六丝鲚的食料成份有季节变化,不过不很显著:春夏两季以桡足类为主,鱼卵次之,十足类(包括短尾类幼虫)更次之。秋季以桡足类为主,十足类(包括莹虾和短尾类幼虫)次之,糠虾更次之。冬季以桡足类为主,十足类次之,磷虾类更次之。总的来看,桡足类在四季食料中都占了绝对优势。六丝的次要食料则随季节而异;春夏两季是鱼卵,秋冬两季都是十足类。值得注意的是:糠虾类和介壳类在秋季食料中的比率增加,磷虾类在冬季食料中占相当重要位置。食料的季节变化是和浮游生物的季节变化分不开的。 3.食料种类大小和体长有关:体长在15厘米以上的捕食较大的甲壳类(如磷虾类,口脚类和十足类等),而体长在15厘米以下的则捕食较小的甲壳类(如桡足类)。这和鳃密度有关:前者的鳃较稀(1毫米长中有1.4—1.9鳃)而后者的鳃较密(1毫米中有2.0—2.7鳃)。 4.食料和浮游生物存在着一定关系;在...

1.六丝鲚的食料差不多完全是浮游动物,以甲壳类为主,其中以桡足类为最重要、十足类(包括莹虾)次之,糠虾类,端足类,磷虾类更次之。除甲壳类以外,它还捕食很多毛头类和鱼卵,所以六丝鲚应属蜉食性的鱼类。 2.六丝鲚的食料成份有季节变化,不过不很显著:春夏两季以桡足类为主,鱼卵次之,十足类(包括短尾类幼虫)更次之。秋季以桡足类为主,十足类(包括莹虾和短尾类幼虫)次之,糠虾更次之。冬季以桡足类为主,十足类次之,磷虾类更次之。总的来看,桡足类在四季食料中都占了绝对优势。六丝的次要食料则随季节而异;春夏两季是鱼卵,秋冬两季都是十足类。值得注意的是:糠虾类和介壳类在秋季食料中的比率增加,磷虾类在冬季食料中占相当重要位置。食料的季节变化是和浮游生物的季节变化分不开的。 3.食料种类大小和体长有关:体长在15厘米以上的捕食较大的甲壳类(如磷虾类,口脚类和十足类等),而体长在15厘米以下的则捕食较小的甲壳类(如桡足类)。这和鳃密度有关:前者的鳃较稀(1毫米长中有1.4—1.9鳃)而后者的鳃较密(1毫米中有2.0—2.7鳃)。 4.食料和浮游生物存在着一定关系;在浮游生物中占优势的种类也同样地在食料中占优势。桡足类便是一个很显著例子。其他甲壳类也有相似情况。可是水母则不然,它在浮游生物中很

Decompose lithium ores with a mixture of HF and H_2SO_2, expel HF by evaporation. Separate Fe and Al. by means of urea, and separate Ca by precipitation with saturated oxalic acid. The interference of potassium may be corrected by calibration curve method. The amounts of Li_2O (apparent) and K_2O in solution may be determined by flame photometry. The actual lithium contents obtained by method of difference have been compared with that of control samples contaning Li_2O<0.11%, the absolute deviation is found...

Decompose lithium ores with a mixture of HF and H_2SO_2, expel HF by evaporation. Separate Fe and Al. by means of urea, and separate Ca by precipitation with saturated oxalic acid. The interference of potassium may be corrected by calibration curve method. The amounts of Li_2O (apparent) and K_2O in solution may be determined by flame photometry. The actual lithium contents obtained by method of difference have been compared with that of control samples contaning Li_2O<0.11%, the absolute deviation is found to be less than .03%.

將含鋰矿样用HF—H_2SO_4分解,并蒸发除去HF,然后用尿素分离Fe和Al,以真飽和草酸分离Ca真至于鉀对鋰的影响,可用校正曲线法改正。溶液中鋰(待校正的)及鉀的含量均用火焰光度法测定。用差减法所得真实鋰含量与管理矿样比较,其对誤差(当Li_2O%小于0.11%时)小于+0.03%

The Silurian strata well developed in the Yichang area,Western Hubei,wereformerly divided into three formations,in ascending order,Lungmachi,Lojoping andShamao(C.Y.Hsieh and Y.T.Chao,1925;T.H.Yin,1949;A.T.Mu,1959),andhave recently been revised into five units:(see Table 1).Among these units,theLungmachi formation(ss),is very rich in graptolites,whereas in the others grapto-lites are rather rare.Based on the study of graptolites,all the formations except theShamao(ss)are considered to be of Lower Silurian age.The...

The Silurian strata well developed in the Yichang area,Western Hubei,wereformerly divided into three formations,in ascending order,Lungmachi,Lojoping andShamao(C.Y.Hsieh and Y.T.Chao,1925;T.H.Yin,1949;A.T.Mu,1959),andhave recently been revised into five units:(see Table 1).Among these units,theLungmachi formation(ss),is very rich in graptolites,whereas in the others grapto-lites are rather rare.Based on the study of graptolites,all the formations except theShamao(ss)are considered to be of Lower Silurian age.The material dealt with in the present paper contains 50 species and subspeciesbelonging to 17 genera and 1 subgenus,of which,1 genus,1 subgenus and 34 speciesand subspecies are new.According to the different characters,the virgula of Petalolithus from WesternHubei may be divided into three types:(1)Expansive type:virgula expanded gradually,with only one vane.(see Text.2,fig.1)(2)Zonary type:virgula with three vanes of uniform width.(see Text.2,fig.4)(3)Broomy type:virgula is multibrachiate.(see Text.2,fig.2)The new genus and new subgenus may be diagnosed as follows:Genus Dischidograptus Ni gen.nov.Type species:Petalolithus mirabilis Mu et al.Biserial,axonophorous graptoloid,rhabdosome scandent proximally and dividingdistally into 2 uniserial reclined stipes,forming“Y”-shape;thecae long,with gentleventral curvature,overlap considerable;virgula dividing repeatedly to from complexbuoyancy.(see Text.Ⅱ,fig.3).Based on the distal character of the rhabdosome,Petalolithus ovatus scopaecu-larus Schauer may be grouped in this new genus.Genus Rastrites Barrande,1850Subgenus R.(Lituigraptus)Ni subgen,nov.Type species:R.(Lituigraptus)glomeratus subgen,et sp.nov.Rhabdosome curved,thecae isolate,apertures of proximal thecae hooked,those ofdistal thecae broader,opening outward with long and paired apertural spines.According to the peculiar thecal character,Rastrites phleoides T■rnquist seems tobe a member of this subgenus.

本文着重研究湖北宜昌早志留世笔石的新材料,共描述18属50种,其中有一个新属和一个新亚属,34新种和新亚种,从而对本地区的志留系划分提供了依据,并对早志留世笔石带作了补充。在研究花瓣笔石(Petalolithus)特征和轴囊构造的基础上,认为Petalolithusmirabilis Mu et al.应独立成属,定名为分裂笔石(新属)(Dischidograptus gen.nov.)。根据笔石体胞管口部特征,在笔石属(Rastrites)中,建立一新亚属,取名为喇叭笔石(新亚属)Rastrites(Lituigraptus)subgen.nov.。

 
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