Drop the needles on the paper and calculate the percentage that fall on a line. With enough attempts, the answer should be the needle length divided by the width between lines, all multiplied by 2/pi.
将针随便丢在纸上，然后计算出落在线上的针的百分比，随着尝试次数的足够多，最终这个百分比将越来越逼近针的长度除以格子的宽度再乘以2/pi。
The skin-prick test: a drop of a solution containing the suspected allergen is placed on the skin of the subject's forearm, which is then pricked with a needle.
皮肤点刺试验：在受试者前臂皮肤上滴上一滴含有疑似过敏原的溶液，然后用针刺。
Like a drop of water from the point of a needle disappearing into the ocean, my daysare dripping into the stream of time, soundless, traceless.
我的日子缓缓汇入了时间的河流，就像针尖上的一滴水消失在无垠的大海，无声无息。无影无踪。
Like a drop of water from the point of a needle disappearing into the ocean, my days are dripping into the stream of time, soundless, traceless.
我的日子缓缓汇入了时间的河流，就像针尖上的一滴水消失在无垠的大海，无声无息。无影无踪。
We manufacture various kinds of needle roller bearings. Drop up needle bearing and ring type entity needle bearings are our special products.
我厂生产各种各类滚针轴承，其：冲压外圈型，实体套圈型滚针轴承为本厂特色产品。
Like a drop of water from the point of a needle disappearing into the ocean, my days are dripping into the stream of time, soundless, traceless.
像针尖上一滴水滴消失在大海里，我的日子滴在时间的涓涓溪流里，无音无影。
Crown Drop of a Needle roller decides the pressure distribution between roller and raceway, capability and life.
轴承滚针的凸度设计，决定了滚动体与滚道间的接触压力分布，影响其性能和寿命。
Like a drop of water from the point of a needle disappearing into the ocean, my days are dripping into the stream of time, soundless, traceless.
象针尖上一滴水滴在大海里，我的日子滴在时间的流里，没有声音也没有影子。
As guided needle valve system is greater than the amount of water displacement, the main valve pressure drop in the control room.
由于导阀系统排水量大于针阀的进水量，主阀控制室压力下降。
As guided needle valve system is greater than the amount of water displacement, the main valve pressure drop in the control room.
由于导阀系统排水量大于针阀的进水量，主阀控制室压力下降。
应用推荐