Xpot mobile mining

1. Huawei pot-al00a is Huawei Changxiang 9s mobile phone. As of December 7, 2019, the price of Huawei Changxiang 9s (4GB RAM / All China Netcom) is 1249 yuan

1. Appearance design

Huawei Changxiang 9s adopts the design of 6.21 inch pearl screen, with 89% screen proportion, screen resolution of 2340x1080, 85% high color gamut and 415ppi. Vacuum plating process, with ceramic texture. Color matching, including Aurora blue, coral red, nebula blue and polar night black< In terms of configuration, Huawei Changxiang 9s is equipped with 12NM Kirin 710 processor, 4GB + 64 / 128GB memory and 512gb memory expansion of TF card. The battery is 3400mah, and the micro USB interface is adopted. The system supports GPU Tubro 2.0 and Huawei super file system

3. Camera aspect

Huawei enjoys 9s rear AI three camera, which are 24 megapixel main camera, 16 megapixel wide-angle lens and 2 megapixel depth sensor. Support super night scene, 480 frame super slow motion, 16 times slow play, AI intelligent scene recognition, etc<

extended data:

specific parameters of network and connection:

1. 4G network


mobile TD-LTE, Unicom TD-LTE, Unicom fdd-lte, telecom TD-LTE, telecom fdd-lte

2. 3G network

Mobile 3G (TD-SCDMA), Unicom 3G (WCDMA), telecom 3G (CDMA2000), Unicom 2G / mobile 2g (GSM), Telecom 2g (CDMA)

3. SIM card type

al card (al nano SIM card + micro SD card)

4. WLAN function

al band WiFi, IEEE 802.11 a / B / g / N / AC

5. Navigation

GPS Guidance & gt;, A-GPS technology, GLONASS navigation, Beidou navigation

6, Bluetooth

support Bluetooth 4.2

reference materials source: ZOL Zhongguancun Online - Huawei Changxiang 9s (4GB RAM / all Netcom)

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2. The transmission performance of mechanism can be measured by C. transmission angle

the transmission angle and pressure angle are the remainder of each other, that is, the transmission angle plus pressure angle is equal to 90 ° The smaller the pressure angle is (the larger the transmission angle is), the more "consistent" the force is with the direction of motion. When the pressure angle is 0, the direction of force is "coincident" with the direction of motion

for reference.

3. The relative degree of the quick return characteristics of the mechanism can be expressed by the travel speed variation coefficient K, which is called the travel speed variation coefficient. It is the ratio of the average speed of the reciprocating follower in the empty return and the average speed in the working stroke when the driving member rotates at the same speed in the quick return mechanism. It can be expressed by the following formula,

where it is called the angle between the two positions of the crank when the rocker is in the limit position

common mechanism with quick return characteristic in life:

offset crank slider mechanism

crank swing guide bar mechanism

6.4.2 force transmission characteristics (pressure angle and transmission angle)

usually the force transmission performance of four-bar mechanism is expressed by pressure angle and transmission angle. The acute angle between the force direction of the force point and the velocity direction of the force point of the follower is called the pressure angle, and the remainder of the pressure angle is called the transmission angle

ring the operation of the mechanism, the pressure angle and transmission
change with the position of the follower. The smaller the pressure angle is, the greater the effective component of the follower motion is, and the higher the transmission efficiency of the mechanism is. Therefore, the force transmission characteristics of the mechanism can be judged by the pressure angle
in order to ensure the normal operation of the mechanism, the maximum pressure angle or the minimum transmission angle of the working stroke should be limited, and the minimum transmission angle should be ≥ 40 in general design °

when the hinge four-bar mechanism is running, as shown in the figure above, the position of the minimum transmission angle is at the two positions where the crank and the frame are collinear, and the minimum transmission angle can appear

the minimum transmission angle of other common four-bar mechanisms:

offset crank slider mechanism

crank swing guide mechanism

6.4.3 dead center position

when crank ab is a follower, when connecting rod BC and crank AB are in the collinear position, the transmission angle between connecting rod BC and crank AB is 0 °， Pressure angle
= 90 °， At this time, the force of rocker CD transmitted to follower crank AB through connecting rod BC passes through crank rotation center a, the rotation torque is zero, the follower does not rotate, and the mechanism stops. This position of the mechanism is called dead center position

measures for the mechanism to pass through the dead center position smoothly:

(1) using the inertia of the follower to pass through the dead center position smoothly

(2) through the dead point successfully by using the dislocation arrangement

4.

I think there are two sides to everything. those who are 40-45 years old and abandoned by enterprises are generally those who are mediocre and have no help to the enterprise. If they are really helpful to the enterprise, they will not be abandoned by the enterprise . However, if many ordinary people stay in their jobs until they are 40-45 years old, they are likely to be abandoned by enterprises. This is indeed a normal situation

so if you want to not be abandoned by the enterprise in middle age, I think the best way is to improve yourself. Don't give up enthusiasm and enthusiasm for work because of the growth of age< only when you become better can you make the company pay attention to your value and leave your footprints in the company