查询词典 natural balance

According to the change of the enemy\'s quantity and the qualitative theory of the differential equation, we research the spruce aphides and its predator system. At the same time, we discussion the spruce aphid multiplication model when the natural enemy quantity is a certain value and the periodic oscillating model whose the quantity of the natural enemy changes along with the time. Obtains the stability condition of the balance point and the limit-cycle existing condition, the system presents the dissipative structure\'s character. Finally it explains that this theoretical analysis has certain practical significance regarding the preventing and controlling harmful insect.

第五章，松毛虫与其天敌的关系是食饵和捕食者的关系，根据天敌数量的变化，利用微分方程定性理论，研究松毛虫与天敌系统，讨论天敌数量为一定时的松毛虫增殖模型和天敌数量随时间变化的周期振荡模型，得到正平衡点全局稳定性和极限环的存在条件，通过计算机模拟，说明周期振荡的捕食模型能够呈现典型的时间耗散结构特征，对于防治害虫有一定的实际意义。

This colorful natural plant essence is provided with ideal cleansing effect, realizes the perfect balance of moisture and grease, accelerates the natural withering and peeling of acne and comedo, helps skin metabolize aging corneum, eliminate acne and comedo, prevent acne from generating.

每一滴都是精纯珍品，清凉舒适，丰富多彩的天然植物精华具有理想的净化效果，实现水油完美平衡，加速暗疮、粉刺自然萎缩和脱落，帮助肌肤代谢老化角质，从而消除暗疮以及痘痘，并且预防粉刺生成。

According to the present situations of protected area in China and referring to the definition and category abroad, we suggested the forest natural protected area mainly include three types as follow: Nature Reserves (NR; types of forest eco-system), Forest Parks and Public Welfare Tree Farm. Researches of evaluation on ecotourism resources of forest natural protected area focused on two aspects basically: to appraise and account the ecotourism resources monetarily from the standpoint of pure economics; to assess the exploitability of ecotourism resources based on the theories of conservation biology and ecology, in which finding the reasonable equilibrating point between protection and: utilization was emphasized. On the studies of development pattern of forest ecotourism resources, it is necessary to deal with the relationship between protection and exploitation correctively, namely to put the protection as the first consideration and balance the "Tree r.1ajor Benefits" so that prompting the virtuous circle afforest ecotourism.

根据我国自然保护地的实际情况，参考国外自然保护地的定义与分类方式，可认为我国的森林自然保护地主要应主要包括森林生态系统类型自然保护区、森林公园及公益林场三种类型；森林自然保护地的生态旅游资源评价研究主要集中在两方面：一是单纯地从经济学角度对旅游资源游憩价值进行货币化评价与核算，二是从保护生物学和生态学角度对资源的可开发性进行评价，其侧重在于找到保护与开发的的科学平衡点；在森林自然保护地旅游资源的开发模式研究上，必须正确处理开发与保护的关系，把保护放在第一位，坚持"三大效益"兼顾的原则，才能实现森林生态旅游资源开发与保护的良性循环。

For another,(the overuse of natural resources has influenced the balance of natural ecology ).

也可以作为写作的范本加以背诵，提高自己的语感和闪光点意识。

Natural process did eliminate some species through natural selection; however, it did not break the balance of the ecosystem.

地球上不同的时代，很多物种的灭绝是自然进化的结果，而非人类所为。

Sport is the instinctive impulse of human beings for natural needs, a natural expression of seeking for existence balance, body powerfulness and life meaning, the need of human beings for survival and development, also the most genuine emotional experience.

体育运动是人的自然需要和本能冲动，是一种寻求生存平衡、身体强大和生命意义的自然表达，是人类生存和发展的必需，也是最为真实的情感体验。

The reanalysis of the rule whether a natural person can be sentenced to death penalty in a unit criminal case according to the deterrence hypothesis;5. the reanalysis in the view from economics of the double-penalty system in a unit crime by the rule of effectiveness, and the rationality of applying liberty-penalty to a judiciary party;6. the punishing rule applied to the co-crime of natural person and judicial party by the rule of local balance.

第一部分，法经济学的本质—效率和公正浑然一体，是全文的理论基础，主要将法学和经济学各自具有的不同原则(即法学的公正原则和经济学的效率原则)进行了大致介绍，同时从两大学科对社会生活的本质研究的一致性(即均是研究社会权益配置的合理性)来分析两大学科是如何达到相融，从而形成法经济学这门交叉学科的必然性。

DESPRIPTION】 This product adopts natural activated Collagen Peptide as its ingredient, and combines the SAYF(skin activate and youthful factor) and micro spinning technology of elastic fiber to make the eye pact perfectly fit around the eye contour, It can quickly supplement skin moisture and provide quick penetration of nutrient substance to the stratum basale under the guide of the nutrient substance penetrating absorption principle, as well as promote the vitality of skin cells, 95% of which will efficiently absorb and reserve moisture and balance PH value to make the skin elastic and soft, and significantly improve low collagen synthesis which is related to aging. It can also efficiently prevent and reduce eyes' skin wrinkles and cutis laxa to restore the eyes' skin moist and elastic, and implement the nutrition lost because of the fluctuations in temperatures to promote the natural moisture ability of the skin around the eyes to make those skin instantly moisturized, smooth, refresh and outstanding radiant. The wrinkles and fine lines will be reduced at the same time, and the black circles will be no longer apparent.

本品采用天然的活性胶原蛋白多肽为原料，独有的SAYF融合弹性纤维的微纺技术，完美贴合眼部轮廓，可快速补充皮肤在外界所流失的水分，功效营养物质通过透皮吸收原理，快速渗透到皮肤的基底层，并渗提高皮肤细胞活力，其95%有效吸收留住水分，平衡PH值，使皮肤增加弹性和柔软性；明显改善与老化相关的胶原合成低下的现象，有效预防和减少眼部肌肤皱纹及松弛的现象，恢复润泽和弹性，同时补充眼部皮肤在各种温度不定的情况下流失的营养，提升眼周肌肤自然储水力，双眸瞬间滋润、光滑、丰盈，焕然一新，细纹与皱纹减少，黑眼圈变得不再明显。

SWEET KELP POWDER IN COSMETIC, SKIN AND HAIR CARE INDUSTRIESSWEET KELP POWDER products are widely adopted as ingredients in making natural cosmetics, skin and hair care products for people with normal skin, dried skin, damaged skin and aging skin, and hair damaged, scalp protection in multiply applications such of pH balance, secretion balance, nurturing, moistening, activating, purification, regeneration and rejuvenation and sunburn protection.

甜海带粉化妆品、护肤护发甜海带粉制品业的广泛采用，使天然成分的化妆品，皮肤和头发护理产品，为残疾人正常皮肤，皮肤干燥、皮肤老化、皮肤损害、而头发受损，保护头皮的pH值乘以申请这种平衡，平衡分泌、培养、滋润、活化、净化、再生与复兴、炙保护。

Low rotten bituminous coal (jet coal, it glues coal to be and weak to glue coal), natural radioactive level lower,( 238U: 33.2- 50.0Bq/kg , 232Th: 52.5- 54.4Bq/kg , 226Ra: 30.6- 56.5Bq/kg ), obviously lower than the brown coal than activity, and the uranium , radium which the companion grew is in a basic balance, uranium , thorium are also in a basic balance.

低变质烟煤（包括长焰煤、不粘煤和弱粘煤）天然放射性水平较低，（238U：33.2～50.0Bq/kg、232Th：52.5～54.4Bq/kg、226Ra：30.6～56.5Bq/kg），比活度明显低于褐煤，且伴生的铀、镭基本平衡，铀、钍亦基本平衡。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。