期
- 与 期 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
The basin is one of the Cenozoic rift basins, which has experienced a series of paleo-climate change since Early Pleistocene, including wet cold, wet-warm, and arid. A former lake was believed to develop at the early stage of late Pleistocene (around 120 ka BP), and vanish during the Holocene. With the vanishment of the lake, the early Yellow River occurred. It results in a complex sedimentary environment with fluvial and lacustrine sediments interlacing each other.
河套盆地是一个新生代断陷盆地,自更新世早期以来经历了由湿冷-湿冷/暖-全新世干旱的古气候变化,盆地的发展经历了湖泊全盛期-收缩期-消亡期-河流发育期,沉积环境演化为湖积/河积交错沉积。
-
In the same neuron, veratridine (1.5~5.0 μmol/L) caused slow wave oscillations of interspike intervals, while aconitine (10~200 μmol/L) caused tonic firing.
结果发现,在同一神经元,藜芦碱(1.5~5.0 μmol/L)可以引起放电峰峰间期的慢波振荡,即峰峰间期由大逐渐减小,然后又逐渐增大,形成重复的振荡波形,每个振荡持续约数十秒至数分钟;而乌头碱(10~200 μmol/L)则引起强直性放电,即峰峰间期逐渐减小,然后维持在一个稳定的水平。
-
On the basis of volcanological study,here we present thirty one K-Ar ages of basaltic rocks and two 14C ages of coke and peat. The history of LGV Quartenary activities can be divided into three main periods, namely Xiaoyishan Period (Early Pleistocene:2.15~0.75Ma), Longang Period (Middle-Late Pleistocene::0.68~0.05Ma) and Jinglongdingzi Period Holocene:1600~1500a.
根据31个火山岩K-Ar年龄和2个炭化木与泥炭层的14C年龄,将龙岗第四纪火山活动分为三期:小椅山期(早更新世:2.15~0.75Ma)、龙岗期(中-晚更新世:0.68~0.05Ma)和金龙顶子期(全新世:1600~1500a。
-
From June 30 this year began, the market interest rate has fallen by 70 basis points more than 1 year, 3-year and 7-year bond yield to maturity showed a clear trend towards decline, the current 1,3-year treasury bonds yield less than 3%.
从今年6月30日开始,市场利率70个基点,跌幅超过1年,3年期和7年期国债的到期收益率呈明显下降趋势走向,目前的1,3年期国债收益率低于3%。
-
At zygotene,t he SC formation initiated at multiple sites in each bivalent but the regions nea r telomeres were preferred.SCs were shortened with development of SCs.Initiation of new SC and extension of existing SC occured simultaneously,and pairing in di fferent bivalents of a nucleus was not synchronised.
结果表明,小麦SC以多点式起始方式于偶线期开始形成;随SC的发育,新的SC形成和已有SC片断的延伸并存;此外,在同一核内不同二价体之间,染色体配对和SC形成并不同步;SC成熟于粗线期,而以破碎方式解体,消失于双线期。
-
The key species in the pioneer species period is Achillea capillaries, Izeris denticulate, Salsola colliha., than the key species gradually change to Potentilla spp, Heteropappus altaicus, Cleistogenes spp in the species gradually prosperity period, Lespedeza dahurica, Stipa bungeana, Artemisia sacrorum in the species quasi-steady period, Lespedeza dahurica, Artemisia sacrorum in the species relatively steady period, Peri ploca sepium Bunge, Clematis fruticosa turcz, Spiraea spp in the bush pioneer species invasion period.
其中先锋植物物种期以茵陈蒿、苦买菜、猪毛菜为关键种;物种渐繁荣期以委陵菜、阿尔泰狗哇花和隐子草为关键种;物种鼎盛期多物种共存,关键种不明显;物种准稳定期以长芒草、铁杆蒿和达乌里胡枝子为关键种;物种相对稳定期以铁杆蒿、达乌里胡枝子为关键种;灌木先锋物种主要有杠柳、木本铁线莲、绣线菊等。
-
The call developmental process of Psittacula agapornis consists of five instinct phases according to its call character. In the first phase (congenital cal1 phase, CCP, 0~12 day of age), the juveniles only produce single syllable with short syllable length. The second phase(blank-model-forming phase,BMFP, 13~30 day of age) is important for formation of vocal learning pathways. During this phase, the calls characterized by more and longer syllables. In the third phase (call-model-forming phase,CMFP, 31~45 day of age), the call development is guided by a model system for vocal learning, vocal learning is engendered so that some calls with multi-syllables with UP1 are produced, principal frequency has increased about by 920 cent, the number of note is double that of second phase. The short-term memories are transformed into long-term memories in the forth phase (call-feedback-learning phase,CFLP, 46~90 day of age). The call of juveniles is a close match to tutor call which accompanied by double various sounds with BS and UP1, and more resonance components were formed. Second principal frequency has increased about by 970 cent, the number of note increases by 2.6~3.0 times. During the fifth phase (excellent call phase,ECP, after 91 d), vocal motor pathway is developed and the calls are accompanied with most stable, harmonious vari-tone and complex repertoire.
牡丹鹦鹉的鸣声发育分为5个时期。0~12 d为先天性鸣声期,鸣声特征为以基本音为主音的单音节单音调声,声长短。13~30 d为空白模板形成期,鸣声特征为以基本音为主音的多音节单音调声,声长和音量显著性增加,表明发声学习通路开始形成。31~45 d为鸣声模板形成期,鸣声特征为以第1陪音(UP1)为主音的多音节单变调声,声长和音量显著性增加,主音频提升约920音分,涵盖的律音数增加1倍,表明发声学习模板逐渐形成,发声学习开始。46~90 d为鸣声反馈学习期,鸣声特征为以BS和UP1为主音的双变调声,声长和音量显著性增加,主音频涵盖的律音数增加2.6~3.0倍,第2主音频提升约970音分,表明稳定模板逐渐形成,短期记忆逐渐向长期记忆转化。91 d后为完美鸣声期,鸣声特征为以UP1为主音的复合变音调声,声长、音量、主音频的提升和涵盖的律音数都趋于平稳,鸣声稳定而和谐,表明发声运动通路基本形成。
-
Quality change on Alisma plantago-aquatica at various growing-seedling stages, transplanting stages, and collecting stages
刘红昌,杨文钰,陈兴福。不同育苗期、移栽期和采收期川泽泻质量变化研究。中草药,2007,(5):754-758
-
Emplacement of metallogenic solution and forming of ore-body take place in post-orogenic or anorogenic setting.(7) Gold metallogenic types dominently are fracture zone altered rock type and quartz dyke type, and then dissemination type and cryptoexplosing brecciatype.
区内金成矿时代主要属于华力西期和印支期,金成矿热液的形成与板块碰撞期的岩浆活动和变质作用有关;矿液就位及矿体形成发生于造山后或非造山环境。
-
The body weights of SSB fed on control rice after feeding on KMD1 for 36h were very significantly lower on day 0 and day 3, and significantly lower on day 9, compared with those of the control. Parasitism rates of host larvae fed on KMD1 by Apanteles chilonis were significantly (3th instar) or very significantly (4th and 5th instar) lower than those of the control host.
二化螟绒茧蜂寄生取食过KMD1的二化螟后,三个龄期幼虫的寄生率都显著下降,其中4龄和5龄达极显著水平;3龄和4龄上的结茧率显著低于对照;蜂蛹历期均短于对照,但仅3龄差异显著;从5龄幼虫所羽化的雄蜂寿命显著短于对照;蜂茧长显著短于对照;而对卵+幼虫期、茧块大小、蜂羽化率及性比均无显著影响。
- 推荐网络例句
-
They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.
他们没有侵略性,但我大喊,并在他们的方向扔石头让他们过的线索,远离我,以防万一。
-
In slot 2 in your bag put wrapping paper, quantity does not matter in this case.
在你的书包里槽2把包装纸、数量无关紧要。
-
Store this product in a sealed, lightproof, dry and cool place.
密封,遮光,置阴凉干燥处。