on the pin

基本解釋

So because there is no friction on the pin - and because the strings are massless-- only because of that must the tension be everywhere the same.
所以，由于圖釘沒有摩擦,且細繩沒有質(zhì)量-,細繩的張力,一定處處相等。
Focusing on the pin number, it then goes into a switch structure that takes a different action depending on which sensor is connected to the pin.
以管腳編號為中心，然后再進入到一個 switch 結(jié)構(gòu)，根據(jù)連接到此管腳的傳感器來采取不同的措施。
When I have something I have to remember (a bill to pay in a few weeks for instance) I put it in a prominent place on the pin board above my computer.
如果有我需要記住的事情，例如過幾周就要償還的賬單，我把它放在我電腦上插針板的顯著位置。

"I was trying," he said, "to put the history of mankind in one sentence." Later he said, "I am still trying to do it, but now I want to put it all on the head of a pin."

Today, Mr Sarkozy's rivals on the right pin it on him.
ECONOMIST: French anti-Americanism
On your breadboard connect the MIDI circuit as follows: The collector is connected to a 220 ohm resistor which is connected to the second pin from the left on the back of the female midi connector (labelled pin 5).
ENGADGET: How-To Control Csound with a Custom Midi Controller: Hardware (2 of 2)
Mr. WEISBERG: Yes and I think the volatility, basically, is just indicative of the fact that people just simply don't know what to do and so everybody is sort of sitting on the head of a pin, easily pushed one way or the other depending on the headline or rumor.
NPR: Floor Trader Describes Wall Street Gyrations