帮忙翻译下面这段话
Mixing tlow experiment and simulation parameters .parameters used in the simulations are as follows . Figs la and 2: emission rate of the source R=1 ,particle lifetime τ=2500 and diff usivity D=1.The typical travel distance during a lifetime is approximately =50. The search space is a grid 512*512,and equation (1) was evaluated for five possible action at each time step (moves to the four neighbours and standing still). Figure 1b: wind blows downwards with unit speed ,the emission rate R=1/2 and the lifetime of particles τ=150, the initial vertical separation to the source . Figure 3:experimental data are generated injecting dye by a 8 mm tube in the far filed of a jet, a large-scale(integral scale~10cm) sustained turbulent flow. The pictures in the figures show the random advection of the dye downstream of the injection point(for about three integral scales). Dye is passively transported by the flow, as odours are. Odour detection events correspond to encounters with dye concentrations above a threshold fixed at about five times the average intensity level. The mean velocity (pointing downward in Fig.3) is about 4cm/s (its measurement by olfactory robots might be realized using standard anemometers ), and the root-mean-square velocity is about 30% of the mean velocity, giving a Reynolds number of ~10^3. Snapshots of the filed are acquired at a frequency of 200Hz. Coherent odour patches make the searcher spiral around the location of the encounters due to correlations among the detections. Yet, the resulting search process is just twice as long as for a model with independent hits, and might be further accelerated by accounting for time-correlations, as detailed in Supplementary Information.

(由于没有图参考，有些地方只能推测，希望能帮你)

混流实验和模拟参数。用于模拟的参数如下： 图1a和图2 ：水排放率R = 1 ，粒子寿命期τ = 2500，扩散系数 D = 1 ，一个寿命期标准流动距离≌50 。探测空间是一个512 × 512方格，方程（ 1 ）在每个时段评价五个装置（水流移向相邻四个固定装置）。图1B ：以单位速度向下吹风，水排放率R = 1 / 2，粒子寿命期τ = 150，初始垂直与水源分离。图3：实验数据是通过一个不间断大型紊流试验获得（总刻度约10cm），试验中由远离现场的8mm管喷嘴注入染料。数字图片显示了注入点（总刻度约3cm）下游染料随机平流情况。和气味的传送方式一样，染料也是通过流动传送的。气味检测活动与相遇的高于固定门值的染料浓度一致，染料浓度约是平均强度水平的5倍。平均速度（图3指示向下 ）约4 cm/s（嗅觉机器人通过标准风速表可完成测量） ，均方根速度是平均流速的30 ％左右，显示的雷诺数约为10 ^ 3 。已经获得频率为200Hz的快射照片。通过监测数据的对比，相干气味的斑块使得探针围绕相遇位置盘旋。而且，最终探测过程的时间仅是拥有独立采样数模型的两倍，通过时间对比解释，探测速度会更快，详细情况请参考附加信息。