The phenomenon of beats can be observed directly on the double-channel oscillograph and the frequency of alternating current can be measured by the vibration curve of the beats.
在双通道示波器上可直观地观测拍现象 ,并利用拍振动曲线测量交流电的频率。
In this papaer,using double channel scope,the phenomenon of Lisaru figure and beats can be observed directly,the compose of simple harmonic motion on scope is deeply understood by the students.
本文通过用双踪示波器来观察李萨如图形和“拍”现象 ,加深学生对两种特殊形式的简谐振动合成的理
Nonlinear vortex-induced force identification on beat state of 1-D bluff body vertical vortex-induced vibration
一维钝体竖向拍振非线性涡激力识别
The relation between the symmetry of the beat figures and the frequency ratio n 1/n 2,the initial phases Ψ 1?Ψ 2 of the component of vibrations is analyzed.
分析了拍图形的对称性与分振动的频率比n1/n2 及初相Ψ1、Ψ2 之间的关系 ,导出了不同的Ψ1、Ψ2 (0 ,π ,±π/ 2 )与Δn(Δn =n1-n2 为奇数或偶数 )的配搭情况下的拍图形对称性规律 ,得出了拍图形对称性决定于Ψ1、Ψ2 和Δn的结
Refer to a type of handle with the middle protrude.
葫芦柄，自然仿生学柄：横拍拍柄的一种类型，中间部位稍膨出。
Insert a small amount of hot glue or epoxy into the handle.
灌入粘合剂或环氧基树脂到拍柄内。
Myth- The racket turning in your hand means you did not hold on tight enough.
传统观点：手中的拍子转动了，那是因为你没有握紧拍柄。
Shock Eraser Insert: Thermoplastic rubber core inside a thermoplastic elastomer butt cap is pressure fit into the shaft to reduce frame shock and vibration.
减震插片：拍柄内置热塑性橡胶内核同热塑性弹性体，有效减少球拍震动。
a small racket with a long handle used for playing squash.
壁球运动中使用的有长手柄的小球拍。
Check again by tapping the racquet against your hand (fairly hard).
再摇晃球拍并把手柄击打自己的手检查一次。
The shaft of the server's racket at the instant of hitting the shuttle shall be pointing in a downward direction to such an extent that the whole head of the racket is discernible below the whole of the server's hand holding the racket.
发球员球拍击到球的瞬间,球柄应朝下,整个拍框应明显低于发球员握拍的手。
Players should replace their tennis racquet grip more often then they have their racquet re-strung. There is nothing like the feel of a clean, fresh grip when playing tennis.
选手更换柄皮应该比更换拍线更频繁.打球时只有干净清爽的柄皮感觉才会好.
a game invented by American indians; now played by two teams who use long-handled rackets to catch and carry and throw the ball toward the opponents' goal.
一种由美洲的印第安人发明的游戏；玩时两队用长的有把柄的拍子。
They typically feature some sort of handle system for dampening frame shock &vibration.
有一些球拍由于本身的结构问题，我们无法在手柄内增加重量。
The strong, elastic wood of this tree, used for furniture, tool handles, and sporting goods such as baseball bats.
木，白蜡木这种树的坚硬有弹性的木材，用于（制作）家具、工具柄、运动器材如板球拍等
A sport played by volleying a shuttlecock back and forth over a high, narrow net by means of a light, long - handled racket.
羽毛球一种体育运动，在一定高度、宽度的网子范围内用一只轻的长柄球拍前后截击羽毛球
A sessile leaf has no petiole.
无柄的叶没有叶柄。
A handle of a tool, such as an ax, a chisel, or a hammer.
柄工具的手柄，如斧头、凿子或锤子的柄
Faucet controls handle to Chan Bing and Shuang Bingzhi are divided.
水龙头控制手柄有单柄和双柄之分。
A flattened leafstalk that functions as a leaf, as in an acacia.
叶状柄起叶子作用的扁平叶柄，如洋槐的叶柄
A handle or hilt, especially the handle of a tool or weapon.
把手，柄把手或柄，尤其是工具或武器的柄
a pedunculate flower; a pedunculate barnacle is attached to the substrate by a fleshy foot or stalk.
有柄花；有柄藤壶是通过肉足或者柄附在底部的。