单只的

After 13 months culture, sporophytes began to form. Each gametophyte had several archegonia, and only one sporophyte was produced per gametophyte. The first sporophyte frond was simple and had pinnate venation.

抱子体在经13个月的培养后开始产生，每个配子体虽然有许多的藏卵器，但只产生一株孢子体，第一片孢子体的叶片为单叶羽状脉。

The neighbouring Streamside Colony wipes out the Trailheaders, then itself falls victim to a "supercolony", comprising millions of workers and thousands of queens, which rose to power thanks to a single-gene mutation that weakens their sensitivity to queen-odours, and thus permits them to tolerate multiple simultaneous queens.

邻近的"河边蚁群"彻底摧毁了"道口蚁群"，后来，"河边蚁群"自身又成了"超级蚁群"的刀下鬼。"超级蚁群"由数百万工蚁和数千只母蚁王组成，该群得以成长为超级群，缘于一次单基因突变，该突变削弱了蚁群对母蚁王气味的敏感度，从而，使得蚁群可以接受数个母蚁王同时存在。

It was hopping from clump to heather clump with a sinister sort of valiance, holding its fluttering stick arms at an angle to balance it on the hillside.

稻草人在他们身后约五十码处，单脚跳着，跳过树丛，以一种非比寻常的勇猛追赶着，两只鼓动着的手臂，张成一个特定的角度，以便在山坡上保持平衡。

The weak formulation permit is satisfied not point by point, finite element method balances only at node neighborhood, in unit balance is not required, in analytical method single check from infinite series does not satisfy the equation, but infinite number of points satisfy the equation, and then the weak formulation of dual system of Hamilton equations was educed.

基于基本方程和边界条件的弱形式，给出相应的广义变分和不同形式的有限元所采用的弱条件，说明弱形式允许不是逐点满足，有限元法只在节点邻域平衡，在单元内不要求平衡，解析法用无穷级数中单取一项也不满足方程，也是无穷多项在积分下满足，进而导出对偶体系弱形式哈密尔顿方程。

How did they learn to abstract from these first associations so that yuk or something like it began to refer to all tasty clams rather than one?

他们是如何学会把这些首次与其相关的事物抽象出来，从而使"约克"或诸如此类的声音开始指的是所有好吃的而不是单指一只蛤蜊呢？。

There were 22 pollinating insect species belonging to 4 orders and 11 families, among which, native bee species Megachile abluta, M. spissula, Xylocopa valga, Andrena parvula and Anthophora melanognatha were the main pollinators. M. abluta, M. spissula and X. valga were of uni-peak type with diurnal foraging activities trom 11:30 to 15:30, while A. parvula and A. melanognatha were of double-peak type with diurnal foraging activities on 9:30-11:30 and 16:30-18:30, indicating a complementary relationship among the pollinators. The main pollinators had significant differences in their tripping frequency and landing time, and their foraging behaviors were correlated with their body sizes.

结果表明：苜蓿访花昆虫共计22种，分别属于4个目，11个科，根据弹花效率初步确定鳞地蜂、黑颚条蜂、净切叶蜂、细切叶蜂和紫木蜂为河西地区主要传粉昆虫；主要传粉昆虫的日活动规律出现单峰型和双峰型2种，净切叶蜂、细切叶蜂和紫木蜂属于前者，只在11：30-15：30出现一个活动高峰，而鳞地蜂与黑颚条蜂则为双峰型，在9：30-11：30和16：30-18：30分别出现访花高峰，不同的传粉昆虫之间存在互补关系；主要传粉昆虫的弹花频率和小花停留时间存在显著差异，且访花行为与野生蜂体型紧密相关。

But patients with both the infection and IBD were four times more likely to die than patients with just IBD or C difficile infection alone, irrespective of age.

但患者都感染和鸡传染性法氏囊病的4倍多，可能死的病人比只鸡传染性法氏囊病或c感染的艰难，单是不分年龄。

This product is applicable to coal mine where has explosible dangerous gas and coal dust,It is used for controlling direct starting stop and reversion of three-phase squierrel cage type asynchronous motor whose rated current up to 400A in system of AC50Hz rated voltage 1140V or 660V, Meanwhile it protects the electromotor and relative circuit, The starter can be combined with firedamp sensor and used to test the consistency of mining working area,the starter will trip when it exceed the limit ;adopt intrinsic safety type circuit for the control circuit; possess the function of local control and remote control by single set and multi sets procedure control; display working voltage current and gas consistency can remember fault parameter

该产品适用于具有爆炸性危险气体和煤尘的矿井中，在交流50Hz，额定电压为1140V或660V ，控制额定电流只400A的三相鼠笼式异步电动机的直接起动，停止及反转，同时对电动机及有关电路进行保护，起动器可与甲烷传感器相连接用于检测才掘工作面的甲烷浓度，当其超限时起动器跳闸；控制电路采用本安型电路；具备单台就地控制与远方控制及多台程序控制功能，能显示工作电压、电流、瓦斯浓度，并能记忆故障参数。

Methods since 2004 at my hospital for medical treatment in patients with chronic heart failure 58 cases were randomly divided into two groups, treatment group 32 cases, at the basis of conventional therapy with captopril and add 5-Isosorbide Mononitrate; control group 26 cases, only in the conventional therapy plus captopril; administration of the two groups were observed at 8 weeks of the efficacy and safety.

选取2004年以来在我院治疗的慢性心功能不全患者58例，随机分成两组，治疗组32例，在常规治疗的基础上加用卡托普利和5-单硝酸异山梨醇酯；对照组26例，只在常规治疗的基础上加用卡托普利；观察两组在给药8周的疗效及安全性。

METHODS: 24 rabbits were divided into four groups: control group; rapid pacing group; adenosine perfusing group; selective adenosine receptor antagonist perfusing group. The index of observed: time of repolarization in monophase action potential (APD90); the active level of A1 adenosine receptor; the level of free calcium in the atrium cells and the ability of atrium cell to release calcium.

新西兰白兔24只，随机分为4组：①对照组：常规克氏液灌流，②腺苷灌流组：灌流液中加入2umol/L的腺苷，③心房快速起搏组：常规克氏液灌流+心房快速起搏，④腺苷受体拮抗剂干预组：克氏液+DPCPX（100nmol/L）灌流+心房快速起搏；观察指标：①起搏前后心房肌单相动作电位复极时间的变化；②起搏组和对照组的心房肌腺苷A〓受体活性对比；③心房肌细胞内游离钙含量以及氯化钾激动后钙释放能力对比。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。