“She hated how the trees blocked out the rest of the world, branches overlapping like the fingers of clasped hands, absorbing light and sound.” I really felt that situation. That excitement and mystery and little bit of trepidation when I’d go for walks in the vast woods behind the ...
4-Channel Variable Optical AttenuatorKeithley 2800 Mobile Communication RF Power Analyzer usedtestersoil testerdsl testerion testervertical geophone 45 hz seismic survey equipment / seismic geophon sensorNational Instruments sbRIO-9208 C Series Current Input Module20Hz to 10MHz STB8839 Series Precision ...
The equivalent threshold sound pressure levels and test-retest threshold variability of a consumer-grade insert earphone fitted with stock, foam, and otoacoustic emission probe ear tipsAbstractKumar SeluakumaranAmirah Kamal AziziJeyanthi Kulasegarah...
Size, weight, and thickness can be customized. Feature(1) High Impact strength (2) Good resistance to light and weathering (3) Duration for 3-6 years Physical Properties Item No. Grade Surface film Adhesive Liner Durability (year) Standard size ...
Two stage alarm with sound and light Explosion proof design, proof grade Ex dII CT6, IP65 water dust proof. LED display, Independent acousto-optic alarm, need extra cost $15/pc. With zero calibration functions, makes the detection ...
4. Chinese and English operation.5. The gas concentration unit PPM and mg/m3 can be shifted quickly.6. The battery and voltage can be checked by one press.7. One press to restore factory settings.Ultra-high buzzer alarm sound, alarm with sound, light and...
They welcome the new year with the first light of the sunrise. 可知,为了过一个快乐的新年,人们要早起看日出,故答案是C。 (4)细节理解题,根据 In the United States, some people eat black-eyed peas for good luck-but to get good luck for a whole year, you have to eat 365 of them!可知...
4. 13.3inch color monitor with 1080P resolution5. All-digital recording by external storage SD Card/ USB driver to store still pictures or videos. 6. 50M(180ftish) longest, 6.8mm(0.26'') push rod 40/30/20M(66-135ft) optional 7. Solid yet lightweight and mult...
SMART SENSOR AR823 Digital Lux / Light Meter $26.00 - $31.50 Min. order: 10 pieces BENETECH WT1357 30dB~130dB Digital Sound Level Meter $15.00 - $16.00 Min. order: 10 pieces EZ9909 5 in 1 Digital TDS/EC/PH/Salinity/Temperature Meter Water Quality Test Pen $11.00 - $12.00 Min. orde...
Ourfoam glass is a porous glass foam material. Its advantages as a building material include its light weight, high strength, and thermal and acoustic insulating properties. It is made by heating a mixture of crushed or granulated glass and a blowing agent such ...