海能达(Hytera)PD750EX 数字对讲机 IP67级防水IIBT3级防爆 防水 防爆 万聚国际(杭州)供应链有限公司 2年 查看详情 ￥3000.00/台 浙江嘉兴 星熠燎原海能达(Hytera)PD590 专业数字对讲机 海能达品牌 万聚国际(杭州)供应链有限公司 2年 查看详情 ￥900.00/台 河南郑州 北通BT-359手台户外酒店餐饮手持户外机工地...
With digital noise-cancelling technology, DM-900EX DMR radio which ensures superior call quality in noisy environments.dual-time slot communication capability improves frequency usage, while its digital-analogy compatibility promotes the utility of customers' resources. Wireless Bluetooth 5 Watts Portable ...
Hytera 海能达 PD700EX 防爆数字对讲机 专业防爆手台(单机头) 4794元(需用券) 京东 2024-12-27 0 -- Hytera 海能达 TC-310/HYT/好易通对讲机 TC310对讲机配件 BL1716 1700毫安锂电池/电板 80元(需用券) 京东 2024-12-29 0 -- BAOFENG 宝锋 对讲机远距离大功率民用商用手台工地酒店物业安保工厂 888S经典版...
Wholesale price GP338 GP380EX GP 338 MTX960 uhf vhf digital portableortable two way radio handy walkie talkie for motorola $906.00 - $920.00 Min. order: 2 pieces Easy Return Two way radio IMPRES walkie talkie battery charger PMPN4527A for Motorola R7 PMNN4807 PMNN4808A PMNN4809A ...
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GATE 1 DOCUMENT NUMBER: DESCRIPTION: 98ASB42564B SOIC−8 NB STYLE 27: PIN 1. ILIMIT 2. OVLO 3. UVLO 4. INPUT+ 5. SOURCE 6. SOURCE 7. SOURCE 8. DRAIN STYLE 28: PIN 1. SW_TO_GND 2. DASIC_OFF 3. DASIC_SW_DET 4. GND 5. V_MON 6. VBULK 7. VBULK 8. VIN Electronic ...
≥UDF/NTFS/exFAT file system is not supported. ≥Depending on the sector size, some files may not work. ≥Only the first partition on USB memories with multi-partition is supported. Indicated in these instructions [USB] by Data that can be played DivX, MP3, Still pictures (JPEG) Data ...
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2、某一个建设项目拟向附近河流排放达标废水,废水量Qp=0.05m3/s,BOD浓度为cp=20mg/L,河水流量Qh=1.5 m3/s,流速v=0.3 m/s,河水中BOD背景浓度为ch=2.5mg/L,BOD的降解系数K=0.2d-1,纵向弥散系数Ex=10m2/s。求排放点下游10km处的BOD浓度。、解:计算起始点处完全混合后的BOD初始浓度,由式(6-1)得: C...