This is known as Buffon's needle problem, after the French mathematician Georges-Louis Leclerc, Comte DE Buffon, who first proposed it in 1733.
这就是著名的蒲丰针问题，由法国数学家乔治·路易·勒克莱尔蒲丰伯爵在1733年第一次提出。
Ren Delin had extended it to long needle problem, who cancelled the limitation (the diameter of the convex domain is less than the distance of the grid of parallel lines).
任德麟作了进一步推广，即取消凸域直径不超过带域间距离这一限制。
Now a grandmother claims to have solved the problem - by redesigning the needle.
再怎么沾湿线头往针眼里送，再怎么眯着眼睛对上灯光，反正就是穿不进。现在，一位奶奶宣布这个问题已经解决——方法是，重新设计一种针。
This may sound a bit like a needle-in-a-haystack problem. There are in many cases millions of bytes of data in a single running program.
这听起来有点像大海捞针，在一个单独运行的程序里有成千上万字节的数据，漫无目的的在数据海洋里乱找结果不会很理想。
We often ignore the real problem and instead search for a needle in a haystack. Solving problems of any kind requires one to adopt a direct approach which addresses all relevant issues.
我们经常忽略实际问题，而是大海捞针。解决任何类型的问题都需要一个人采取直接的办法处理所有相关事情。
Heat treatment process, equipment and technical problems of needle are introduced. Methods and countermeasures to solve the problem are put forward.
介绍了当前国内织针热处理工艺中淬火和回火加工所用的设备、工艺及存在的问题，提出了解决方法和对策。
This method solved the difficult problem that distant fracture of the femer can't be steadied by a plum Blossom shaped needle alone.
此手术方法解决了用梅花针内固定远骨折段不稳定的问题。
In the second chapter, aiming at solving the rigid problem of the jig needle bar, an accuracy control method based on FEA was put forward.
第二章，针对复杂宝石加工专用装备夹具针杆刚性较差的问题，提出了基于有限元分析的夹具针杆挠度控制技术。
A centre vein puncture needle solves the problem that the existing puncture needle can not accurately decide that a blood vessel being penetrated into by the puncture needle is a vein or an arterial.
一种中心静脉穿刺针，解决现有穿刺针无法准确判断穿刺针穿入的血管是静脉还是动脉的问题。
A centre vein puncture needle solves the problem that the existing puncture needle can not accurately decide that a blood vessel being penetrated into by the puncture needle is a vein or an arterial.
一种中心静脉穿刺针，解决现有穿刺针无法准确判断穿刺针穿入的血管是静脉还是动脉的问题。
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