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91. Experimental results showed that the service life of die can be improved evidently by using high temperature quenching and stress relief annealing.

92. Generally, the steel rolling furnace's service life is 3-10 years, the wrought steel chamber furnace is about 2 years, and the soaking pit side nozzle furnace's is 3-6 years.

93. As a kind of initiative maintenance, preventive maintenance mainly aims at prolonging service life of medical equipment, extending their fault-free time and lowering the whole life expense.

94. A calculating technique is also proposed to determine the service life and nominal power of the belt.

95. The proper selection of hose and effective management can extend the hose's service life.

96. Its of high floor durability and long service life, and can save maintenance cost by margin.

97. The four-sided valve has the advantages of long service life, rapid cutting-off of water and good sealing performance.

98. It has been shortening the service life of mines because of their low recovery ratio.

99. The network bonding point is firm, but is not slip. The ball shaped plastic avoids the network contacting floor directly, and reduces abrasion, further prolonging the net service life.

100. The Coast Guard's other heavy, polar icebreaker, the Polar Star, was placed in a caretaker status in 2006 and is undergoing a seven- to 10-year service life extension.

101. The service life of aluminum reduction cell can be prolonged by optimization of the cathode material, heat field distribution, roasting and starting process, normal operation.

102. The steel dies with high dimensional accuracy, low surface roughness and long service life have been quickly produced by using prototyping resin molds as patterns of ceramic investment casting.

103. The casted door brick for reverberatory furnace which introduced mullite grains has an obvious longer service life than the imported brick .

104. Rotary percussion drilling tool may solve the problem of low rate of penetration and short service life of drilling bit in hard-brash formations.

105. At last, a reasonable ladle linings structure which attain the goal of improving the ladle service life was put forward by changing the lining structure and considering the fact about swell gap.

106. Battery: Inner rechargeable Sealed Lead - Acid Battery with big capacity and long service life.

107. Structural reliability estimation and structural residual service life predication are some of the urgent problems need to be solved in the engineering field.

108. Over a long period of time a short service life of the reductor on YQ-100 Down-the-Hole drill was unsatisfactory and remained unsolved. Sentencedict.com

109. Several measures of raising the service life of engineering tire were given from the right using method, road manage, structure, formula and process of the engineering tire.

110. The non qualitative factors are those which affect CT tube′s service life except tube itself qualitative factors.

111. Non-cylindrical pin bore designed as elliptic or taper pin bore instead of cylindrical pin bore can effectively reduce its stress convergence and increase its service life.

112. The plastic magnetic force pump has anticorrosive, high temperature resistant, long in service life, convenient in maintenance and great in bearing moment.

113. In order to improve the energy utilization of node, and prolong its service life, this paper proposed an energy-efficient and self-adjusting of the circle coverage protocol (SCCP).

114. Compared with the prior hygrometer with a moisture sensitive sensor, the invention solves the problem of short service life of the sensor as no failure resulting from the surface contamination occurs.

115. There is difference between domestic rings and travellers and the same products overseas regarding adjustability of high speed operation and service life.

116. The major structure style of Chinese high-type highway at present is asphalt pavement, thus the asphalt mixture performance directly influence the serviceability and service life of highway.

117. Their application in switch electrical contact and electrical brush shows that the properties and service life of these composite were improved apparently by adding carbon fiber.

118. Article 21An enterprise shall, at least at the end of each year, check the service life and the amortization method of intangible assets with limited service life.

119. To introduce the wire rope structure and service life situation of solid polymer covered and filled rope for electric shovel in China.

120. Service life of guide roll of mill is raised by self - lubrication antifriction of metal sulphides.