pitchfork
英 [ˈpɪtʃfɔːk]
美 [ˈpɪtʃfɔːrk]
n. 杈子; 干草叉
复数：pitchforks 过去分词：pitchforked 过去式：pitchforked 现在分词：pitchforking 第三人称单数：pitchforks
BNC.25645 / COCA.22185
牛津词典
noun
- 杈子；干草叉
a farm tool in the shape of a large fork with a long handle and two or three sharp metal points, used especially for lifting and moving hay (= dried grass), etc.
柯林斯词典
- 干草叉；草耙
Apitchforkis a tool with a long handle and two pointed parts that is used on a farm for lifting hay or cut grass.
英英释义
noun
- a long-handled hand tool with sharp widely spaced prongs for lifting and pitching hay
verb
- lift with a pitchfork
- pitchfork hay
双语例句
- The study shows that: the lasing without inversion can be produced by two destabilization mechanism the pitchfork and Hopf bifurcation;
研究结果表明：系统可以通pitchfork分岔和Hopf分岔两种失稳机制产生无反转激光； - What a waste to use a pitchfork only for garden work. When a few are skillfully combined, they make a very graceful coat stand.
如果只用干草叉来做园艺工作，真是一种浪费。把几个干草叉完美的组合起来，就成了一个非常美观的衣架。 - A simple bimolecular reaction model giving rise to pitchfork bifurcation
一个简单的能呈现二分岔现象的双分子反应模型 - The steady-state solutions and their local stabilities are analyzed analytically. The Hopf bifurcation sets and the Pitchfork sets, on the driving frequency and driving force plane, are determined theoretically and experimentally, showing they agree with each other qualitatively.
解析分析了演化方程的稳态解及其局部稳定性，理论和实验确定了驱动频率和驱动力平面上的Hopf分岔集和叉式分岔集，理论和实验结果定性吻合。 - Moreover, the pitchfork bifurcation curve is given, and the stability of equilibrium points is discussed in terms of different domains partitioned by the bifurcation curve.
并给出了分支曲线图，讨论了在由分支曲线划分的不同区域里平衡点的稳定性。 - Pitchfork Coat and Shovel Coat Hanger
干草叉和铁锹衣架 - It is concluded that the response of this system is a pitchfork bifurcation and the influence of excitation amplitude F 1, F 2 and damping μ is great. The property of the solutions can be easily controlled by adjusting F 1, F 2 and μ.
研究表明，该系统的稳态响应为一叉型分岔，激励幅值F1，F2和阻尼μ对普适开折参数的影响很大，通过调整F1，F2和μ可以很方便地控制解的分岔特性。 - The motion equations of the airfoil are written as the four dimensional one order differential equation, the analytic solutions of the critical speeds for the pitchfork bifurcation and Hopf bifurcation are obtained. The stabilities of the equilibrium points and limit cycles are studied in two parameter plane.
化方程为四维一阶微分方程，解析求出了系统发生叉式分支与Hopf分支的临界流速值，研究了在两个参数平面上的平衡点和极限环的稳定性及其个数。 - When her husband came by, she jumped out and stood before him with her red horns, long tail, and pitchfork.
当丈夫走近时，她从树后跳出来，站到他面前，头上带着红色的羊角、身后有长长的尾巴，手中握着钢叉。 - Some typical bifurcations such as period-doubling, tangent bifurcations, pitchfork and homoclinic bifurcations were observed.
观察到了许多典型的分岔现象，如倍周期分岔、切分岔、叉式分岔、同宿分岔等。