查询词典 backward difference

The Radar Cross Section of an S-shaped circular wave guide and that coated with absorber layer on the inner wall are computed by the fast Iterative Physical Optics method using algorithms of initial value succession and Forward-Backward Iterative.

在此基础上采用初值继承算法和前后向迭代结合的快速IPO方法计算了采用S弯和在腔体内壁涂敷吸波材料对腔体雷达截面的减缩效果。

The teacher tried to civilize the backward students.

老师尽力开化迟钝的学生。

I observ'd, that the two who swam, were yet more than twice as long swimming over the Creek, as the Fellow was, that fled from them: It came now very warmly upon my Thoughts, and indeed irresistibly, that now was my Time to get me a Servant, and perhaps a Companion, or Assistant; and that I was call'd plainly by Providence to save this poor Creature's Life; I immediately run down the Ladders with all possible Expedition, fetches my two Guns, for they were both but at the Foot of the Ladders, as I observ'd above; and getting up again, with the same haste, to the Top of the Hill, I cross'd toward the Sea; and having a very short Cut, and all down Hill, clapp'd my self in the way, between the Pursuers, and the Pursu'd; hallowing aloud to him that fled, who looking back, was at first perhaps as much frighted at me, as at them; but I beckon'd with my Hand to him, to come back; and in the mean time, I slowly advanc'd towards the two that follow'd; then rushing at once upon the foremost, I knock'd him down with the Stock of my Piece I was loath to fire, because 1 would not have the rest hear; though at that distance, it would not have been easily heard, and being out of Sight of the Smoke too, they wou'd not have easily known what to make of it: Having knock'd this Fellow down, the other who pursu'd with him stopp'd, as if he had been frighted; and I advanc'd a-pace towards him; but as I came nearer, I perceiv'd presently, he had a Bow and Arrow, and was fitting it to shoot at me; so I was then necessitated to shoot at him first, which I did, and kill'd him at the first Shoot; the poor Savage who fled, but had stopp'd; though he saw both his Enemies fallen, and kill'd, as he thought; yet was so frighted with the Fire, and Noise of my Piece, that he stood Stock still, and neither came forward or went backward, tho' he seem'd rather enclin'd to fly still, than to come on; I hollow'd again to him, and made Signs to come forward, which he easily understood, and came a little way, then stopp'd again, and then a little further, and stopp'd again, and I cou'd then perceive that he stood trembling, as if he had been taken Prisoner, and had just been to be kill'd, as his two Enemies were; I beckon'd him again to come to me, and gave him all the Signs of Encouragement that I could think of, and he came nearer and nearer, kneeling down every Ten or Twelve steps in token of acknowledgement for my saving his Life: I smil'd at him, and look'd pleasantly, and beckon'd to him to come still nearer; at length he came close to me, and then he kneel'd down again, kiss'd the Ground, and laid his Head upon the Ground, and taking me by the Foot, set my Foot upon his Head; this it seems was in token of swearing to be my Slave for ever; I took him up, and made much of him, and encourag'd him all I could.

这时候，我脑子里突然产生一个强烈的、不可抗拒的欲望：我要找个仆人，现在正是时候；说不定我还能找到一个侣伴，一个帮手哩。这明明是上天召唤我救救这个可怜虫的命呢！我立即跑下梯子，拿起我的两支枪--前面我已提到，这两支枪就放在梯子脚下。然后，又迅速爬上梯子，翻过山顶，向海边跑去。我抄了一条近路，跑下山去，插身在追踪者和逃跑者之间。我向那逃跑的野人大声呼唤。他回头望了望，起初仿佛对我也很害怕，其程度不亚于害怕追赶他的野人。但我用手势召唤他过来，同时慢慢向后面追上来的两个野人迎上去。等他俩走近时，我一下子冲到前面的一个野人跟前，用枪杆子把他打倒在地。我不想开枪，怕枪声让其余的野人听见。其实距离这么远，枪声是很难听到的；即使隐隐约约听到了，他们也看不见硝烟，所以肯定会弄不清是怎么回事。第一个野人被我打倒之后，同他一起追来的那个野人就停住了脚步，仿佛吓住了。于是我又急步向他迎上去。当我快走近他时，见他手里拿起弓箭，准备拉弓向我放箭。我不得不先向他开枪，一枪就把他打死了。那逃跑的野人这时也停住了脚步。这可怜的家伙虽然亲眼见到他的两个敌人都已经倒下，并且在他看来已必死无疑，但却给我的枪声和火光吓坏了。他站在那里，呆若木鸡，既不进也不退，看样子他很想逃跑而不敢走近我。我向他大声招呼，做手势叫他过来。他明白了我的意思，向前走几步停停，又走几步又停停。这时，我看到他站在那里，混身发抖。他以为自己成了我的俘虏，也将像他的两个敌人那样被杀死。我又向他招招手，叫他靠近我，并做出种种手势叫他不要害怕。他这才慢慢向前走，每走一二十步便跪一下，好像是感谢我救了他的命。我向他微笑，作出和蔼可亲的样子，并一再用手招呼他，叫他再靠近一点。最后，他走到我跟前，再次跪下，吻着地面，又把头贴在地上，把我的一只脚放到他的头上，好像在宣誓愿终身做我的奴隶。我把他扶起来，对他十分和气，并千方百计叫他不要害怕。但事情还没有完。

No shoot, says Friday, no yet, me shoot nom, me no kill; me stay, give you one more laugh; and indeed so he did, as you will see presently; for when the Bear see his Enemy gone, he comes back from the Bough where he stood; but did it mighty leisurely, looking behind him every Step, and coming backward till he got into the Body of the Tree; then with the same hinder End foremost, he came down the Tree, grasping it with his Claws, and moving one Foot at a Time, very leisurely; at this Juncture, and just before he could set his hind Feet upon the Ground, Friday stept up close to him, clapt the Muzzle of his Piece into his Ear, and shot him dead as a Stone.

不打，"星期五说："还不打。现在不开枪，我不打它。我呆在这儿，再让你们乐一下。不久，我们就看到，他真的这样干了。因为那熊见他的敌人走了，也就从它站着的树枝上往后退。但它往回走的时候极其从容不迫，每走一步，都要回头看一下。退着退着，它终于退到树干上来。

Bump. Clunk. Ker-plop! Hershey fell backward into the vat.

砰地一声，贺喜往后倒进了桶内。

The ability to work backward in the supply chain is critical because the pigment is added to the coating, which is applied by the aluminum company with its coil coater.

工作能力落后的供应链是至关重要的，因为色素添加到涂料，这是采用铝公司，其线圈涂布。

The Invid's snout dropped open when he saw Wolff standing there armed to the teeth, and he immediately fell backward against his coconspirator, hoping Wolff would read it as Burak attempting a capture.

因维人看到沃尔夫全副武装站在那里时，尖嘴惊讶地张开合不拢，随后立刻向后摔倒，倒向自己的同谋，希望沃尔夫会以为伯拉克在擒拿他。

A new method for updating the codebook is proposed to improve the accuracy of the adaptive backward codebook.

为了提高自适应后向码本的精度，提出了一种码本更新的新算法。

It is found that a codimension 2 bifurcation can be produced by a constant treatment rate, and a backward bifurcation occurs due to a nonlinear treatment rate.

发现了常数治愈率引起余维2分枝，非线性治愈率导致后向分枝，比较了标准发生率和双线性发生率对传染病演变趋势的影响。

By making use of multi-points backward pressure of one dry gas well, this paper introduces how to confirm dynamic friction coefficient of downhole tubing at the exact moment through stable testing material, gives the productivity and the corresponding bottom hole pressure by using productivity equation, calculates wellhead pressure in combination with dynamic friction coefficient of tubing, establishes the correct wellhead outflow performance equation for this well, draws out wellhead outflow performance curve and discusses how wellhead outflow performance equation or wellhead outflow performance curve changes with the decrease of formation pressure or the change of wellhead outflow performance curve.

借助1口干气井的多点回压法试井资料，介绍了如何利用气井稳定试井资料，确定该气井此时此刻井下油管动态摩阻系数；利用产能方程给出产量和对应的井底压力，结合油管动态摩阻系数计算井口压力，建立该井准确的井口流出动态方程并编绘井口流出动态曲线；讨论了随着地层压力递减和井下油管动态摩阻系数变化规律，井口流出动态方程或井口流出动态曲线的变化规律。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！