查询词典 altitude

The intensity and way of the cold high atmospheric pressure center,Ф568 (the latitude at the nodical point of the 5680 geopotential meter line with the 120°E line in the 500hPa high altitude) and Ф850(the latitude at the nodical point of the 0℃ temperature lute with the 120°E line in the 850hPa high altitude) were closely related to the minimum temperature. The equation of short-term forecast of low temperature weather for Fuzhou, Xiamen and Shaowu was established by stepwise regression analysis. The detemperature rate was estimated by cloud cover, wind velocity, humidity (N20, F20, U20) at 20:00 o'clock.

通过对历史资料分析，利用逐步回归分析方法分别建立了福州、厦门和邵武三个探空站最低气温t的短期预报方程，再利用各地当晚20时的云量、风速、湿度(N20、F20、U20)值估算当晚的降温幅度、进一步对最低气温t进行短时临近预报，然后结合各地果树主栽品种及其抗低温冻害指标、及时发布低温冻害预警预告，构成了福建省冬季果树冻害低温预报预警模式。

Therefore, we selected common species of Ranunculaceae. comparative primordial plants in Alpine Meadow at Eastern QinghaiTibetan Plateau, and studied the reproductive strategies, such as reproductive allocation, especially sex allocation, to understand how the plants adapt the environmental conditions. The results showed:(1) At higher altitude, the self-incompatible plant, such as Trollius ranunculoides tended to become limited by pollination rather than by nutrient availability, while the self-compatible plants, such as Anemone rivularis and A. obtusiloba seemed not to be limited by pollen availability, which suggested that ability of self pollination for alpine plants may be a mechanism of reproductive assurance.(2) Influences induced by high altitude on the reproduction of these species occurred on different reproductive characters, which suggest species-specific adaptive strategies. The influences are dependent on plant size to some extent.

因此，我们选择在青藏高原东部的高寒草甸，以比较原始的植物类群—毛茛科植物为研究对象，选择一些常见种探讨其繁殖对策，如繁殖分配和性分配问题，试图揭示这些植物如何适应环境条件，最后的结果表明： 1高寒草甸高海拔区，自交植物(如小花草玉梅A.rivularis和钝裂银莲花A.obtusiloba)的繁殖不受花粉限制，而完全异交植物(毛茛状金莲花T.ranunculoides)的繁殖受花粉限制，表明高海拔地区植物的白花授粉能力可能是一种繁殖保障机制，能够避免恶劣环境对植物有性繁殖的不利影响； 2海拔高度对植物的影响因种而异，不同的物种受影响的繁殖性状不同，即使同属亲缘种间也存在差异，表明不同物种对相似环境压力的适应对策不同；而且，海拔高度对植物的影响在一定程度上依赖于植物个体大小，说明植物通过调整其个体大小与繁殖性状的关系来适应环境梯度的变化； 3植物花期和果期的繁殖分配并不完全随海拔升高而减小(只有小花草玉梅的果期RA随海拔升高而减小30％)，与Iwasa和Cohen的预测不完全一致(他们认为繁殖分配随生长季缩短而减小)。

The partly cold-adaptation stratagem of the high altitude amphibian tadpole were researched in the laboratory by analyzing the high altitude amphibian tadpole of Scutiger boulengeri mainly on endpoints related to the dynamic variation of the micro-spatial behavior distribution patterns, the experiment of the temperature tolerance, and the enzyme content and activity of the lactic acid dehydrogenase isozyme in special temperature condition.The behavior distribution of the Scutiger boulengeri t...

西藏齿突蟾蝌蚪在不同温度的行为分布是一连续、动态过程，需用多种检验方法综合利用才能进行判断；在15℃，除低海拔分布的西藏齿突蟾种群外所有实验物种蝌蚪均符合负二项分布、NeymanⅡ型分布；在10℃，高海拔两栖类蝌蚪均符合负二项分布、NeymanⅡ型分布；在5℃、0℃低温时，高海拔两栖类不同分组的西藏齿突蟾蝌蚪的负二项分布、NeymanⅡ型分布均呈现明显差异，这可能与高海拔两栖类蝌蚪在低温条件下通过不断地改变其行为分布方式来避免自身被冻伤有关。

With increasing altitude,pollen numberdecreased and length of stylar ramification increased gradually.Increased stylarramification of plants of Saussurea with increasing altitude has importantadaptive significance of evolutionary ecology.It ensured sexsual reproductivesuccess,provided a foundation of hereditary variation and increased specificdiversity.In addition,asexsual reproduction of most species of Saussurea assuredindividual quantity.

根据我们调查，生活在青藏高原东缘的多数风毛菊属植物都具有无性繁殖方式，它保证了风毛菊属植物物种的个体数量，而花柱分枝的变长保证了风毛菊属植物的有性繁殖成功，为风毛菊属植物在该地区的进化提供了遗传变异的基础，增加了风毛菊属植物的物种多样性，使得风毛菊属植物的多数物种都成为该地区的常见种，也可能是青藏高原地区是风毛菊属植物的现代分布中心的原因之一。19。

In this study,the effects of temperature,the growth regulator GA3 and storage conditions on seed germination of the biennial Swertia mussotii Franch were compared in seeds from a natural high altitude alpine site and after one-cycle of artificial cultivation at a low altitude.

比较了温度、生长素(赤霉素GA3)和储藏条件对川西獐牙菜高海拔野生自然种群和低海拔栽培后种子发芽率的影响。

PID control has been successfully used in many fields such as aviation, spaceflight, missile and other industry control system. The study object in the thesis is missile that flies hedgehopping over sea at minimum altitude. Many interference problem must be solved when missile flies at minimum altitude, otherwise the missile would be dangerous of bumping into the sea under the circumstances of bad weather and wave. The different kinds of interference factors are contradictions with requirements of control system, which can not be solved by PID control.

尽管在航空、航天、导弹以及其它工业控制领域PID控制曾经应用的十分普遍和成功，但对本文所研究的某型超低空掠海飞行的导弹，要实现超低空飞行必须处理好各种干扰问题，否则，在恶劣的气象和海情的条件下便有使导弹与海浪相撞的危险。

To describe the exterior environment where airplanes fly at low altitude, complex landform for minimum altitude flying was formed by planning multiple mountain ranges and many kinds of physiognomies.

由于地形遮蔽和地面杂波的干扰使得飞机在做超低空突防时不易被地面雷达发现，因此，低空和超低空突防逐渐成为现代战争中对敌方地面目标实施精确打击的主要作战方式。

There is a direct correlation between coffee density and the altitude that the coffee plant is growing at, with a higher altitude equaling a higher density.

海拔高度与咖啡密度也有直接的关系，海拔越高就意味着密度越高。

There is a direct correlation between coffee density and the altitude that the coffee plant is growing at, with a higher altitude equaling a higher density.

海拔高度与咖啡密度也有直接的关系，海拔越高就意味著密度越高。

The relative concept and key technology of high altitude airships have been introduced, and it is indicated that the self-adaptation position control is critical technology in developing a high altitude airship.

介绍了有关高空飞艇的概念和关键技术，指出自適应定点控制是高空飞艇发展中的核心关键技术。

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％。