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We choose the arid land of northwestern China as our study area because of its extensive area, specific geographical location, dry climate, varied topography, vulnerable ecosystems and long-term human disturbance, as well as the existence of current conflicts between economic development and environmental protection. Based on the literature, we choose ten desert species with clear and relatively accurate geographical distribution ranges to model their distributions:Anabasis brevifolia, Atraphaxis frutescens, Calligonum mon-golicum, Ephedra przewalskii, Gymnocarpos przewalskii, Haloxylon ammodendron, Haloxylon persicum, Ka-lidium cuspidatum, Salsola laricifolia, and Sympegma regelii.

：选择面积广阔、地理位置特殊、气候干旱、地形地貌多样、生态系统脆弱以及人类活动长期干扰，而且目前面临着西部大开发和环境保护双重矛盾的西北干旱区作为研究区域，通过收集西北干旱区多种优势种和常见种的地理分布资料，选取10种分布范围相对明确、资料相对齐备的荒漠植物种：短叶假木贼、木蓼(A- traphaxis frutescens)、沙拐枣、膜果麻黄、裸果木、梭梭柴、白梭梭、尖叶盐爪爪、松叶猪毛菜(Salsola lar- icifolia)和合头草，定量分析其地理分布与气候因子的关系，并据此估测其潜在中心分布区和潜在最大分布范围，与实际分布范围进行比较。

Claw and bastinado, it is the enginery of two kinds of different feelings, claw is concealed in the assassin of shadow like, the immediateness of quiet silence, the attack that abrupt prevents not as good as, let adversary have not enough time to react deadly already.

爪与杖，是两种不同感觉的兵器，爪就像一个隐藏在暗处的刺客，悄无声息的接近，猝不及防的攻击，让对手来不及反应便已致命。

Claw and bastinado, the enginery of two kinds of different feelings, claw is concealed in the assassin of shadow like, the immediateness of quiet silence, the attack that abrupt prevents not as good as, let adversary have not enough time to react deadly already.

爪与杖，两种不同感觉的兵器，爪就像一个隐藏在暗处的刺客，悄无声息的接近，猝不及防的攻击，让对手来不及反应便已致命。

Before being arrested in the Tiger Claw, he secretly hid his wife and son, but they can not leave him too long, about to give birth to his wife and young son can not be in such a dangerous environment for food, if not timely Tiger Claw back to their side, they may be found killed or starved to death.

在虎爪被抓之前，他偷偷地藏起了自己的妻子和儿子，但他们不能离开他太久，即将分娩的妻子和幼小的儿子无法在如此危险的环境中寻找食物，如果虎爪不能及时回到他们身边，他们可能会被发现杀死，或者活活饿死。

These results have indicated that the telencephalon of the subadults had the roughly similar structure with the adults, and that Onychodctylus fischeri is a relatively primitive type in amphibian. This research, at some extent, has filled in the blank space data in nerve system and nerve development of tailed amphibian type.

这些都表明亚成体爪鲵的端脑已大致具备了成体所具有的结构，并且也说明了爪鲵在两栖纲动物中属于较原始的种类，这在一定程度上填补了有关有尾两栖类神经系统资料以及神经发育资料的空白。

This practical new-pattern power input axis 1 is assorted with furrow whole machine batholith 46 power fitting machine support 26 install rototiller axis 21 gear box 4,17 There are glide assorted umbrella gears 5, tooth border away-combine talon 7 and spring in axis .umbrella gears 5 and power input axis end of umbrella gears 11 mesh , the other end of axis with umbrella gears 42 mesh umbrella gears14 on rototiller axis 21, on axis 21 installs revovle furrow sword 23, on the shelf is tail wheel 29.tooth border away-combine talon 7 is driven by branch arm 35 on dial fork axis 34, branch arm is controlled by handle 38, connect part 39, control hold 36, it has orientation part .

本实用新型动力输入轴1与耕整机底盘46动力装置配合。机架26上装有旋耕轴21，齿轮箱4，17。轴1有滑动配合的伞齿轮5和牙镶离合爪7，有弹簧8。伞齿轮5与动力输出轴13端部的伞齿轮11啮合，轴13另一端有伞齿轮42与旋耕轴21上的伞齿轮14啮合，轴21上装有旋耕刀23，上有尾轮29。牙镶离合爪7由位于拨叉轴34上的支臂35驱动，支臂由手柄38，连接件39，操纵把36控制，有定位件45。

20CrNiMo steel can be matched as the materials for the cone and jaw of KX-250 tri-cone bit.

KX-250三牙轮钻头上的牙轮牙爪可选用20CrNiMo钢锻造，但20CrNiMo牙轮牙爪在锻造过程中产生的缺陷严重影响产品的力学性能。

She has no 'grooming claw' on her second toe, a feature that all lemurs share.

她的第二脚趾处没有&梳爪&（即一种带沟槽而弯曲的爪），而这是所有狐猴所共有的特征。

The location of the anti-kickback pawl relative to the hand guard is selected such when the hand guard is positioned a selected distance from a workpiece, the location of the anti-kickback pawls are automatically set.

这样选择抗反冲爪(36，38)相对手护件(32)的位置，使得当手护件(32)定位在离工件一个选定的距离时，自动给定抗反冲爪(36，38)的位置。

From the tool carrier with the design principle, only two will be able to support the claw, as a result of cutting tools to the workpiece resistance F'r, so that the work put in to live with the tool carrier on the two supporting legs.

从跟刀架的设计原理来看，只需两只支承爪就可以了，因车刀给工件的切削抗力F'r，使工件贴住在跟刀架的两个支承爪上。

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％。