查询词典 cones

The bright-yellow background illumination is used to desensitize the green- and red-on cones and has little effect on the blue-on cones.

它的黄色背景光使绿、红等中、长波的视锥细胞失去敏感性，而对兰色短波的视锥细胞几乎不起作用。

In chapter 4, we first discussed the existence of multiple positive solutions of the second order nonsingular Dirichlet boundary value problem for impulsive differential equations by using the fixed point index theorem in cones . Next, we presented some new existence results for singular boundary value problems for second order impulsive differential equations by using fixed point theorem in cones and Leray-Schauder nonlinear alternative theorem.

第四章我们首先利用锥不动点定理讨论了非奇异二阶脉冲微分方程狄利克莱边值问题多个正解的存在性；其次我们用锥不动点定理和Leray-Schauder型非线性抉择定理，讨论了奇异二阶脉冲微分方程狄利克莱边值问题一个及多个正解的存在性。

Seed cones 5-10(-12) cm, often a few basal cones persistent; umbo slightly projecting, ending in a straight, minute prickle; needles (2 or)3(-5) per bundle

球果5-10(-12)厘米，通常一些基部孢子叶球宿存；凸出的鳞脐稍，结束在一直，小皮刺；针叶(2或)每包3(-5) 16 Pinus caribaea 加勒比松

Start by setting 6-8 cones up in a zig zag pattern so the cones allow 6-8 steps to be taken and form an approximate 90 degree angle to the next cone.

从在 z 型图案中做出6-8个转角开始，这些锥形允许6-8步并与下一个锥角形成一个接近90度的角。

Reduction of ovule number as a tendency of speciation in the genus is substantiated by the occurrence of tri_ovulate cones coupled with comprehensive characters of the genus. The metamorphic patterns as well as the leaf nature of the outer envelope indicate that female cones of Ephedra are compound while the female reproductive units of the ovulate cone have been reduced from secondary reproductive shoots similar to those of cordaites by phylogenetic transformation, fusion and reduction. Each fertile bract together with its axillary female reproductive unit composed the Bract Scale and Seed Scale Complex of Ephedra .

基于返祖性畸形三胚珠球花的出现及其他形态特征，认为麻黄属胚珠数目减少是该属内物种特化的一个趋势；利用雌球花发育的畸形现象及外珠被的形态学本质提出麻黄属的雌球果为复轴性构造，雌性生殖单位是由类似于科达类的次级生殖枝构造经系统发育变态、融合、简化成现存的生胚珠构造式样，每一可育苞片及其腋内雌性生殖单位共同组成了麻黄属的苞鳞_种鳞复合体。

Needles 2(or 3) per bundle, dark green, semiorbicular in cross section, 6-15 cm × 1-1.5 mm, resin canals 5-9, marginal, rarely 1 or 2 median, base with persistent sheath initially 1-2 cm. Pollen cones 5-9 mm. Seed cones shortly pedunculate, initially green, turning yellowish brown to brown at maturity, ovoid to ovoid-globose, 2.5-9 × 4-9 cm, usually persistent for a few years.

每包的针叶2(或3)，深绿色，半圆形的在横断面上， 6-15厘米×1-1.5毫米，树脂道5-9，边缘，很少1或2 中位数，基部具宿存鞘最初1-2 厘米雄球花5-9毫米球果有短花序梗，最初绿色，转身成熟时到棕色黄棕色， 2.5-9 * 4-9 厘米，几年的通常宿存。

Leaves glossy deep green adaxially, narrowly linear-lanceolate, straight or slightly falcate, 0.8-6.5(-7) cm × 1.5-5 mm, midvein green abaxially, 0.3-1.2 mm wide, flat with median longitudinal keel throughout, stomatal bands present on both surfaces, bands on adaxial surface 0.5-1.5 mm wide, of 7-28 rows of stomatal, white powdery or not, bands on abaxial surface 1.2-2.8 mm apart, 0.3-0.8(-1) mm from leaf margin, not or rarely white powdery, base decurrent, margin denticulate, sometimes indistinctly so, especially on old trees, with 18-55(-90) teeth per side, apex usually symmetric and spinescent, spine 0.3-2 mm. Pollen cone fascicles terminal, 1-3(-5) together, broadly obovoid, each of 8-20 cones, occasionally a few also around base of seed cone; peduncle 2-4 mm; cones narrowly oblong-conical.

正面的叶有光泽的深绿色，披针形狭线形，直的或稍镰刀形， 0.8-6.5(-7)厘米×1.5-5毫米，中脉绿色背面，全部的0.3-1.2毫米宽，平的具中间的纵向的脊，气孔带宿存在两面，在正面0.5-1.5毫米宽上条纹状，7-28排stomatal的，与否白色粉状，相隔1.2-2.8毫米的条纹状的在背面，从叶缘的0.3-0.8(-1)毫米，白色敷粉的或很少的不，基部下延，边缘具小齿，有时不清楚如此，特别是在古树上，具18-55(-90)齿每边，先端通常对称和具刺，刺0.3个-2毫米雄球花束簇终端，花序梗2-4毫米；圆锥形孢子叶球狭长圆形。

Pollen cones terminal, solitary or clustered in leaf axils, or borne in spikelike complexes; individual cones pedunculate or sessile; microsporophylls numerous, spirally arranged, with distinct adaxial and abaxial surfaces; microsporangia 2; pollen 2(or 3)-saccate in Chinese species,.

雄球花单个顶生，或者在叶腋簇生，或者形成穗状复合花序；雄球花有花序梗或者无；小孢子叶许多，螺旋状排列，背腹面显著；小孢子囊2个；中国的种类的花粉2 (-3)气囊，。

Squirrels winning at outwitting trees' survival strategy - In Science, Andrew McAdam at Michigan State outlines how red squirrels have figured out a way around the elaborate ruse trees have used to protect their crops of tasty seeds.The remarkable part: The squirrels are divining the arrival of bumper crops of spruce cones months before the cones ever materialize and then betting on those crops with the most expensive evolutionary collateral -- a second litter of pups.

松鼠打在尔虞我诈的树木的生存策略科学在密歇根州家mcadam概述如何揣摩红松鼠有一种树周围阐述诡诈，用于保护农作物好吃籽油了不起部分：松鼠的到来占卜丰收云杉筒筒前几个月不断实现再就这些作物投注进化最昂贵的抵押品--第二垃圾的幼犬。

For example,the spiral arrangement of scale－bract complexes on ovule－bearing pine cones,where the female reproductive organs of conifers are located,is important to the production of airflow patterns that spiral over the cones surfaces,thereby passing airborne pollenfrom one scale to the next.

例如，带有胚珠的松球的鳞苞综合体的螺旋状安排，亦即松柏目植物雌性殖器官的所在位置，对于气流模式的形成与产生殊为重要，而这些气流模式在松球的表现盘旋上升，从而把在空气中飞行的花粉从一个鳞苞传播至下一个鳞苞。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。