查询词典 spp

To obtain more messages from Ardisia, some studies, such as characters of seeds germination and storage, factors influencing callus induction and growth, monitoring bergenin in callus of Ardisia spp and plant regeneration of Ardisia spp, were carried out. As a result, calli were obtained from nine species of Ardisia and bergenin, the major pharmaceutical element of Ardisia, was proved to exist in six of them when checked by HPLC. Plant regeneration systems were established from three species of Ardisia too. These works are all reported for the first time.

为更好地利用该属植物资源，本文对紫金牛属植物的种子萌发和贮藏，愈伤组织的诱导和培养，培养物中岩白菜素含量的检测，植株再生等问题进行了研究，首次成功地获得了紫金牛属9个种的愈伤组织并在其中6个种中检测到主要药用成分岩白菜素的存在，同时首次建立了该属3个种的再生体系。

Generally it was in favor of fresh weight increased rate of callus of Ardisia spp to use 2, 4-D instead of using IAA or NAA, while the influence of auxin on dry weight increased rate of callus of Ardisia spp was connected with explants and auxin concentration used.

总体上生长素类使用2，4-D比使用IAA或NAA更有利于紫金牛属植物愈伤组织的鲜重增长，干物质积累则还因种和外植体以及激素浓度而异。

There were lesser and fewer in commercial species and its numbers in the cover net, and the sum of Nemipterus virgatus , Saurida tumbil , Upeneus bensasi , Trachinocephalus myops comprised 95.4% in number and 86.0% in weight of sample catch in the cover net,respectively. The high percentage of juvenile commercial species that were undersized in the codend showed 30.3 mm square mesh codend had more serious damage to most juvenile commercial species, approaching or exceeding 50% in percentage of juvenile species which body length is smaller than fishable size- Trichiurus haumela, Priacanthus tayenus , Navodon tessellatus, Argyrosomus argentatus, Nemipterus bathybius and so on, even exceeding 90% in percentage of juvenile Sepia spp, Loligo spp and Parastromateus niger. In particular, 50% selection lengths ( L 0.5) caught Saurida tumbil and Nemipterus virgatus were smaller than their minimum fishable size.

结果表明，这种规格的方目网囊平均尾数逃逸率为29.76%，平均重量逃逸率为8.46%；出现在套网中的经济种类少、数量少，条尾绯鲤、金线鱼、多齿蛇鲻、大头狗母鱼4种鱼的尾数和重量分别占套网抽样渔获的95.4%和86.0%；网囊中带鱼、长尾大眼鲷、黄鳍马面鲀、白姑鱼、深水金线鱼等鱼种的体长小于可捕标准的个体尾数比例均超过或接近50%，枪乌贼、乌贼、乌鲳等幼鱼尾数比例达90%以上，多齿蛇鲻和金线鱼50%选择体长均未达到最低可捕标准，表明该种规格网囊对多数经济种类幼体的损害比较严重。

Gramineae and Compositae by the shifting sand to the fixed sandy land, the species of which changed greatly, that indicated they were playing a great role in the recovery of the sands. Asclepiadaceae plants could serve as a indicative plants to distinguish between the types of shifting sand and other sand; Portulacaceae and Bibgnoniaceae plants, which appeared only in the fixed sandy land, has become a landmark to determine the fixed sand plants. In addition to artificially plant Caragana spp. and Artemisia spp.

豆科和藜科植物作为流动沙地的先锋物种，表现出较强的适应能力；禾本科和菊科植物由流动沙地到固定沙地，其种类变化较大，表明其在沙地恢复中发挥着巨大的作用；萝摩科植物可作为区分流动沙地和其它沙地类型的指示性植物；马齿苋科和紫薇科植物仅在固定沙地中出现，已成为判断固定沙地的标志性植物。

Common microorganisms isolated in our study were E. coli, Staphylococcus aureus, Kiebsiella spp., Pseudomonas aeruginosa, Bacteroides fragilis and Peptostreptococcus spp.

被分离出的常见细菌为大肠埃希氏菌、金黄色葡萄球菌、克雷伯菌属某些种、铜绿色假单胞、脆弱类杆菌和消化链球菌某些种。

Objective: To clarify the biochemical characteristics of Bartonella spp. and to establish the biochemical identification methods for Bartonella spp.

目的：运用全自动和半自动细菌鉴定系统，分析巴尔通体的生化特性，研究巴尔通体的生化鉴定方法，为今后巴尔通体菌株的生化诊断提供依据。

He prefers Spanish cedar (Cedrela, spp.) to Mahogany (Swietenia, spp.).

他比较喜欢西班牙红杉胜过于桃花心木。

Community structure and areal biomass showed significant changes in time and the maximal biomass was observed during March-April due to Sargassum spp. at Nanwan and Codium spp. at Tiaoshi.

大型海藻群聚及总单位面积生物量有明显的时间变化，在3-4月达最大量，单位面积生物量最大的南湾马尾藻及眺石松藻是总单位面积生物量时间变化的主因。

The principal factors of P.pratensis geographical distribution is organic material、organic carbon and total phosphorus,the chemical factor is the Ph value.The type of distribution of P.pratensis in the SRYYL is P.pratensis+ Geranium spp.,P.pratensis+Elymus nutans,Potentilla anserina+P.pratensis, Ligularia virgaurea+P.pratensis,P.anserina+ Aconitum tanguticum+P.pratensis, Deyeuxia spp.+P.pratensis,E.nutans+P.pratensis, Carex moocroftii+P.pratensis,P.pratensis+Capsellabursa-pastoris,P.anserina+L.virgurea,P.pratensis+ Polygonum sibiricum,P.fruticosa+ Scirpus distigmaticus.

对三江源区草地早熟禾种群调查，主要分布的草地类型有：草地早熟禾+老鹳草草地型，草地早熟禾+垂穗披碱草草地型，鹅绒委陵菜+草地早熟禾草地型，黄帚橐吾+草地早熟禾草地型，鹅绒委陵菜+唐古特乌头+草地早熟禾草地型，野青茅+草地早熟禾草地型，垂穗披碱草+草地早熟禾草地型，青藏苔草+草地早熟禾草地型，草地早熟禾+荠草地型，鹅绒委陵菜+黄帚橐吾草地型，草地早熟禾+西伯利亚蓼草地型，金露梅+双柱头镳草草地型。

Completely different crystal structures and morphology were shown in the meltdrawn films of two kinds of tacticity of sPP. A continuous conformational transform from the 〓 into the of sPP was induced by further stretching. While the zigzag conformation can retransform back to helical 〓 one after annealing above 80℃, the mechanism of conformation transform has been introduced.

Petermann教授学科专业高分子化学与物理研究领域\研究方向学位级别博士学位授予单位中国科学院长春应用化学研究所学位授予日期2001 论文页码总数114页关键词聚丙烯聚丁烯共聚物聚α-烯烃馆藏号BSLW /2003 /O632 /3 用电子显微学、电子衍射、DSC和FTIR等技术对聚α-烯烃及其共聚物的晶体结构和相转变行为进行了系统地研究，包括间同立构聚丙烯、全同立构和间同立构聚丁烯-1（iPB-1，sPB-1）、以及丙烯-丁烯-1间同立构共聚物。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。